It comes out messed up, because you fail at life. There the same thing. The texture only screws up because it's something you did. And your an idiot. Use the search button. No files control recoil, portability, etc. The most plausible reason so far as to why the RoF changes is that the game picks up the models file, and randomly attaches it, unlike the rest. T files change texture. Nothing else.
Edit: @Alby: The animation has nothing to do with the RoF.