So during my first transformation of my newly arrived Asia Exclusive MP10, my excitement slowly turned into disappointment when i realized that the right forearm would not slide all the way in and sit flush into the the shoulder like the left one. To my dismay, I opened up both shoulders and discovered that the same exact forearm piece was used during assembly, 2 left shoulder pieces, instead of mirror image pieces. I know I can fix it myself but what are the odds of TFSource replacing it due to factory defect? anyone else having this issue? Shoul I just bite the bullet and DIY it?