diff --git a/build_linux64/libamsmathutil25.linux64.a b/build_linux64/libamsmathutil25.linux64.a
index 7059581..7e9c8aa 100644
Binary files a/build_linux64/libamsmathutil25.linux64.a and b/build_linux64/libamsmathutil25.linux64.a differ
diff --git a/build_linux64/objstore/amsmathtuil25_test1.o b/build_linux64/objstore/amsmathtuil25_test1.o
index 8ae5f83..48c656d 100644
Binary files a/build_linux64/objstore/amsmathtuil25_test1.o and b/build_linux64/objstore/amsmathtuil25_test1.o differ
diff --git a/build_linux64/objstore/amsmathutiil25_random.o b/build_linux64/objstore/amsmathutiil25_random.o
index 34f1f90..47a5603 100644
Binary files a/build_linux64/objstore/amsmathutiil25_random.o and b/build_linux64/objstore/amsmathutiil25_random.o differ
diff --git a/build_linux64/objstore/amsmathutil25_amsarray_sort.o b/build_linux64/objstore/amsmathutil25_amsarray_sort.o
index 448bb86..a339892 100644
Binary files a/build_linux64/objstore/amsmathutil25_amsarray_sort.o and b/build_linux64/objstore/amsmathutil25_amsarray_sort.o differ
diff --git a/build_linux64/tests b/build_linux64/tests
index b48854c..eb01714 100644
Binary files a/build_linux64/tests and b/build_linux64/tests differ
diff --git a/build_linux64/valgrind.supp b/build_linux64/valgrind.supp
new file mode 100644
index 0000000..48c3d4e
--- /dev/null
+++ b/build_linux64/valgrind.supp
@@ -0,0 +1,36 @@
+# Save this as valgrind.supp
+{
+   glibc_tls_init
+   Memcheck:Param
+   set_robust_list(head)
+   ...
+   fun:__libc_setup_tls
+}
+
+{
+   glibc_malloc_init
+   Memcheck:Cond
+   ...
+   fun:ptmalloc_init*
+}
+
+{
+   glibc_getrandom
+   Memcheck:Cond
+   fun:getrandom
+   ...
+}
+
+{
+   glibc_dl_init
+   Memcheck:Cond
+   ...
+   fun:_dl_*
+}
+
+{
+   glibc_tcache_init
+   Memcheck:Cond
+   ...
+   fun:tcache_init*
+}
\ No newline at end of file
diff --git a/build_mingw64/libamsmathutil25.mingw64.a b/build_mingw64/libamsmathutil25.mingw64.a
index e18b43c..faa83ce 100644
Binary files a/build_mingw64/libamsmathutil25.mingw64.a and b/build_mingw64/libamsmathutil25.mingw64.a differ
diff --git a/build_mingw64/objstore/amsmathtuil25_test1.o b/build_mingw64/objstore/amsmathtuil25_test1.o
index 705cebc..d4ec942 100644
Binary files a/build_mingw64/objstore/amsmathtuil25_test1.o and b/build_mingw64/objstore/amsmathtuil25_test1.o differ
diff --git a/build_mingw64/objstore/amsmathutiil25_random.o b/build_mingw64/objstore/amsmathutiil25_random.o
index a194143..25e958b 100644
Binary files a/build_mingw64/objstore/amsmathutiil25_random.o and b/build_mingw64/objstore/amsmathutiil25_random.o differ
diff --git a/build_mingw64/objstore/amsmathutil25_amsarray_sort.o b/build_mingw64/objstore/amsmathutil25_amsarray_sort.o
index 3b19c9d..2cee879 100644
Binary files a/build_mingw64/objstore/amsmathutil25_amsarray_sort.o and b/build_mingw64/objstore/amsmathutil25_amsarray_sort.o differ
diff --git a/build_mingw64/tests.exe b/build_mingw64/tests.exe
index 1d7b32f..165f964 100644
Binary files a/build_mingw64/tests.exe and b/build_mingw64/tests.exe differ
diff --git a/include/amsmathutil25/testing/amsmathutil25_testing.hpp b/include/amsmathutil25/testing/amsmathutil25_testing.hpp
index 636a7b6..0b0dacf 100644
--- a/include/amsmathutil25/testing/amsmathutil25_testing.hpp
+++ b/include/amsmathutil25/testing/amsmathutil25_testing.hpp
@@ -12,6 +12,8 @@ namespace amsmathutil25
     void test_amsarray_select();
     void test_amsarray_sort1();
     void test_amsarray_insertdelete1();
+    void test_amsarray_insertdelete2();
+    void test_amsarray_minimal();
 
     
 
diff --git a/include/amsmathutil25/util/amsmathutil25_amsarray_impl.hpp b/include/amsmathutil25/util/amsmathutil25_amsarray_impl.hpp
index 86579a8..e7d7898 100644
--- a/include/amsmathutil25/util/amsmathutil25_amsarray_impl.hpp
+++ b/include/amsmathutil25/util/amsmathutil25_amsarray_impl.hpp
@@ -39,6 +39,13 @@ namespace ams
         amsarray_size_t lmin = 0;
         T defval = T();
 
+        void* test_ptr = malloc(16);
+        if(test_ptr) free(test_ptr);
+        else {
+            printf("HEAP CORRUPTED before reserve()!\n");
+            return amsarray_failure;
+        }
+
         if(_newcap<=0)
         {
             length = 0;
@@ -61,12 +68,14 @@ namespace ams
             return ret;
         }
 
+        //this shouldn't be necessary, but I'm getting weird memory bugs.
+        ams::buffer_set<T>(newdata,0,_newcap,defval);
         if(data!=NULL)
         {
             lmin = (_newcap>=reserved) ? reserved : _newcap;
             ams::buffer_cast_copy<T,T>(newdata,data,lmin);
         }
-        ams::buffer_set<T>(newdata,reserved,_newcap,defval);
+        //ams::buffer_set<T>(newdata,reserved,_newcap,defval);
 
         if(data!=NULL) {delete[] data; data = NULL;}
         data = newdata;
@@ -132,7 +141,7 @@ namespace ams
                 return ret;
             }
 
-            q = (amsarray_size_t)((1.0/growfactor)*(double)_newlen);
+            q = (amsarray_size_t)((1.0/growfactor)*(double)reserved);
             if(_newlen<q)
             {
                 res = this->reserve(_newlen);
@@ -237,6 +246,8 @@ namespace ams
             growfactor = other.growfactor;
             data = other.data;
             other.length = 0;
+            other.reserved = 0;
+            other.growfactor = 0;
             other.data = NULL;
         }
         return *this;
@@ -405,8 +416,8 @@ template<typename T> int amsarray<T>::insert(amsarray_size_t ind, const T& val)
 {
     int ret = amsarray_success;
     int res;
-    amsarray<T> narr;
-    amsarray_size_t I;
+    amsarray_size_t I, oldlen;
+    amsarray_size_t I0,I1;
 
     if(ind<0)
     {
@@ -415,61 +426,45 @@ template<typename T> int amsarray<T>::insert(amsarray_size_t ind, const T& val)
     }
     else if(ind<=this->length)
     {
-        res = narr.resize_insert(this->length+1);
-        if(res!=amsarray_success)
+        oldlen = this->length;
+        res = this->resize_insert(this->length + 1);
+        if(res==amsarray_success)
+        {
+            //for now, do things single threaded.
+            //to do things multithreaded, I'd need another buffer
+            if(this->data!=NULL)
+            {
+                for(I=oldlen;I>=ind+1;I--)
+                {
+                    
+                    this->data[I] = this->data[I-1];
+                }
+                this->data[ind] = val;
+            }
+            ret = amsarray_success;
+            return ret;
+        }
+        else
         {
             ret = amsarray_failure;
             return ret;
         }
-
-        if(this->data!=NULL)
-        {
-            for(I=0;I<ind && I<this->length;I++)
-            {
-                narr.data[I] = this->data[I];
-            }
-        }
-        narr.data[ind] = val;
-        if(this->data!=NULL)
-        {
-            for(I=ind+1;I<narr.length;I++)
-            {
-                narr.data[I] = this->data[I-1];
-            }
-        }
-
-        //steal data from narr
-        if(this->data!=NULL) {delete[] this->data; this->data=NULL;}
-        this->length = narr.length;
-        this->data = narr.data;
-        narr.length = 0;
-        narr.data = NULL;
     }
     else
     {
         //inserting past the end of the array
-        res = narr.resize_insert(ind+1);
+        res = this->resize_insert(ind+1);
         if(res!=amsarray_success)
         {
             ret = amsarray_failure;
             return ret;
         }
-
-        if(this->data!=NULL)
+        else
         {
-            for(I=0;I<this->length;I++)
-            {
-                narr.data[I] = this->data[I];
-            }
+            this->data[ind] = val;
+            ret = amsarray_success;
+            return ret;
         }
-        narr.data[ind] = val;
-
-        //steal data from narr
-        if(this->data!=NULL) {delete[] this->data; this->data=NULL;}
-        this->length = narr.length;
-        this->data = narr.data;
-        narr.length = 0;
-        narr.data = NULL;
     }
 
     return ret;
@@ -480,7 +475,6 @@ template<typename T> int amsarray<T>::erase(amsarray_size_t ind)
 {
     int ret = amsarray_success;
     int res;
-    amsarray<T> narr;
     amsarray_size_t I;
 
     if(ind<0 || ind>=this->length)
@@ -489,31 +483,16 @@ template<typename T> int amsarray<T>::erase(amsarray_size_t ind)
         return ret;
     }
 
-    res = narr.resize_insert(this->length-1);
-    if(res!=amsarray_success)
-    {
-        ret = amsarray_failure;
-        return ret;
-    }
-
     if(this->data!=NULL)
     {
-        for(I=0;I<ind && I<this->length && I<narr.length;I++)
+        for(I=ind;I<this->length-1;I++)
         {
-            narr.data[I] = this->data[I];
-        }
-        for(I=ind+1;I<this->length && (I-1)<narr.length;I++)
-        {
-            narr.data[I-1] = this->data[I];
+            this->data[I] = this->data[I+1];
         }
+        this->data[this->length-1] = T();
     }
-
-    //steal data from narr (should be similar to what std::move would do?)
-    if(this->data!=NULL) {delete[] this->data; this->data=NULL;}
-    this->length = narr.length;
-    this->data = narr.data;
-    narr.length = 0;
-    narr.data = NULL;
+    res = this->resize_insert(this->length-1);
+    ret = res;
 
     return ret;
 }
@@ -611,7 +590,7 @@ template<typename T> bool amsarray<T>::operator==(const amsarray<T>& other) cons
     amsarray_size_t I;
     int J;
     int nthreads;
-    std::vector<std::thread*> threads;
+    amsarray<std::thread*> threads;
 
     if(this->length != other.length)
     {
diff --git a/src/amsmathutil25/testing/amsmathtuil25_test1.cpp b/src/amsmathutil25/testing/amsmathtuil25_test1.cpp
index 9e91e5c..56f64d4 100644
--- a/src/amsmathutil25/testing/amsmathtuil25_test1.cpp
+++ b/src/amsmathutil25/testing/amsmathtuil25_test1.cpp
@@ -246,6 +246,53 @@ void test_amsarray_insertdelete1()
     return;
 }
 
+#include <string.h>
+
+struct testing_amsarray_somelargestruct
+{
+    int q1[50];
+    float q2[255];
+    testing_amsarray_somelargestruct() {
+        memset(q1, 0, sizeof(q1));
+        memset(q2, 0, sizeof(q2));
+        return;
+    }
+};
+
+void test_amsarray_insertdelete2()
+{
+    int I,J;
+    //int K;
+    amsarray<testing_amsarray_somelargestruct> la;
+
+
+    la.resize(0);
+
+    for(I=0;I<255;I++)
+    {
+        la.append(testing_amsarray_somelargestruct());
+        printf("la length: %ld reserved: %ld\n", (long)la.length, (long)la.reserved);
+    }
+    for(I=0;I<255;I++)
+    {
+        J = la.length-1;
+        la.erase(J);
+        printf("la length: %ld reserved: %ld\n", (long)la.length, (long)la.reserved);
+    }
+
+    return;
+}
+
+void test_amsarray_minimal()
+{
+    amsarray<int> simple_array;
+    for(int i = 0; i < 10; i++)
+    {
+        simple_array.append(i);
+        printf("Length: %ld\n", simple_array.length);
+    }
+}
+
 
 
 
diff --git a/src/main.cpp b/src/main.cpp
index d1c83e8..e8743b2 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,5 +1,8 @@
 #include <amsmathutil25/amsmathutil25.hpp>
 
+using namespace ams;
+using namespace ams::amsmathutil25;
+
 int main(int argc, char* argv[])
 {
     int ret = 0;
@@ -9,7 +12,10 @@ int main(int argc, char* argv[])
     //ams::amsmathutil25::test_amsarray2();
     //ams::amsmathutil25::test_amsarray_select();
     //ams::amsmathutil25::test_amsarray_sort1();
-    ams::amsmathutil25::test_amsarray_insertdelete1();
+    //test_amsarray_insertdelete1();
+    //test_amsarray_insertdelete2();
+    test_amsarray_minimal();
+
     
     return ret;
 }
\ No newline at end of file