I Need Someone's Help With My First Mod...

Ok so first off I have two dae. files using the same jbeam file for this mod. All I have gone and done to both of the dae. files in blender is modify the mirror base, and glass to be wider, that's it! I have not even touched the materials window at all to modify the materials, and I have not messed with the coding at all besides renaming the slots so that my mod would appear in game. For some reason the body colored mirrors are loading in with no texture, and the black plastic mirrors load in just fine. If anyone knows what may be the issue, I would gladly appreciate any criticism or suggestions from ya'll that may help me since I've never made a mod.