Well, it seems like you guys are right about the issue being "inverted normals"
I asked around over on the game area too and got the same response.

Thing is, I froze transformers after reversing the normals. -1 causes inverted normals, right?
Reversing normals was the only way I could get my -1 mirror to not be inside out.
So essentially, it should be working fine once the transformers are frozen?

My steps are as follows
1. Ctrl+D to copy original
2. Scale to -1 for mirror image
3. Object Mode Select > Display > Normals > Reverse
4. Delete history, freeze, reset
5. Export as fbx
6. Use FBX converter to convert to dae
7. Load to game

@ Acid- Thanks, pretty anxious to read that but for some reason it won't open up for me.