Yeah, you tell 'em!
Honestly though, some of this should have been known to you prior to production. From my understanding, if units share parts of a model (pants, for example), you need to make two different versions (copy/paste), and edit each accordingly, then assign each it's own .dds and .brf files in order to make them seperate. I could be wrong, but I think that's what Betaknight told me, if I remember.