diff --git a/main.go b/main.go
index 0ed518d..de1b12d 100644
--- a/main.go
+++ b/main.go
@@ -106,6 +106,18 @@ func main() {
 			log.Info("protoc build error:", err)
 			os.Exit(-1)
 		}
+
+		// experiment to add a mutex to the structs.
+		// this might fix my other not so great lock implementation on sort (?)
+		// not sure though because I haven't tried it. leave it here until
+		// I can test it
+		if err := addMutex(sortmap); err == nil {
+			log.Info("adding mutex to existing protoc-gen-go file worked")
+			sortmap["mutex"] = "true"
+		} else {
+			log.Info("adding mutex to existing protoc-gen-go file did not work")
+			sortmap["mutex"] = "false"
+		}
 	}
 
 	// if foo.pb.go still doesn't exist, protoc failed
@@ -115,15 +127,6 @@ func main() {
 		badExit(errors.New("failed to be created with protoc and proto-gen-go"))
 	}
 
-	// add mutex
-	if err := addMutex(sortmap); err == nil {
-		log.Info("adding mutex to existing protoc-gen-go file worked")
-		sortmap["mutex"] = "true"
-	} else {
-		log.Info("adding mutex to existing protoc-gen-go file did not work")
-		sortmap["mutex"] = "false"
-	}
-
 	if argv.NoSort {
 		log.Info("not making sort.pb.go file (--no-sort == true)")
 	} else {
diff --git a/sort.go b/sort.go
index 56b2fdd..12e1181 100644
--- a/sort.go
+++ b/sort.go
@@ -58,11 +58,18 @@ func makeSortfile() {
 
 func headerComment(w io.Writer) {
 	fmt.Fprintln(w, "")
-	fmt.Fprintln(w, "// this file was autogenerated with autogenpb")
+	fmt.Fprintln(w, "// This file was autogenerated with autogenpb.")
+	fmt.Fprintln(w, "//     go install go.wit.com/apps/autogenpb@latest")
 	fmt.Fprintln(w, "//")
-	fmt.Fprintln(w, "// you might be able to use it on simple, strictly defined protobuf files")
+	fmt.Fprintln(w, "// You can use it on simple protobuf files")
+	fmt.Fprintln(w, "// The .proto file must have a singular and plural form of a message")
+	fmt.Fprintln(w, "// (for those of you that know ruby on rails, it's like that)")
+	fmt.Fprintln(w, "//")
+	fmt.Fprintln(w, "// You can mark which repos you want to auto generate sort.pb.go and marshal.pb.go files for")
+	fmt.Fprintln(w, "//")
+	fmt.Fprintln(w, "// For an example,")
+	fmt.Fprintln(w, "//       go-clone go.wit.com/lib/protobuf/gitpb")
 	fmt.Fprintln(w, "//")
-	fmt.Fprintln(w, "// go install go.wit.com/apps/autogenpb@latest")
 	fmt.Fprintln(w, "")
 }
 
@@ -238,6 +245,24 @@ func iterReplace(w io.Writer, names map[string]string) {
 }
 
 func iterDelete(w io.Writer, names map[string]string) {
+	fmt.Fprintln(w, "func (all *"+names["Bases"]+") DeleteBy"+names["append"]+"(s string) bool {")
+	fmt.Fprintln(w, "	"+names["lock"]+".Lock()")
+	fmt.Fprintln(w, "	defer "+names["lock"]+".Unlock()")
+	fmt.Fprintln(w, "")
+	fmt.Fprintln(w, "	for i, _ := range all."+names["Bases"]+" {")
+	fmt.Fprintln(w, "		if all."+names["Bases"]+"[i]."+names["append"]+" == s {")
+	fmt.Fprintln(w, "			all."+names["Bases"]+"[i] = all."+names["Bases"]+"[len(all."+names["Bases"]+")-1]")
+	fmt.Fprintln(w, "			all."+names["Bases"]+" = all."+names["Bases"]+"[:len(all."+names["Bases"]+")-1]")
+	fmt.Fprintln(w, "			return true")
+	fmt.Fprintln(w, "		}")
+	fmt.Fprintln(w, "	}")
+	fmt.Fprintln(w, "	return false")
+	fmt.Fprintln(w, "}")
+	fmt.Fprintln(w, "")
+}
+
+// this tries to return the deleted one but is wrong/gives warning if mutex lock is in struct
+func iterDeleteWithCopy(w io.Writer, names map[string]string) {
 	fmt.Fprintln(w, "func (all *"+names["Bases"]+") DeleteBy"+names["append"]+"(s string) *"+names["Base"]+" {")
 	fmt.Fprintln(w, "	"+names["lock"]+".Lock()")
 	fmt.Fprintln(w, "	defer "+names["lock"]+".Unlock()")