Specific model help

hi guys, I’m having a few problems with a model that is essentially abit like a… uh… patio heater :P, It’s a little complex though (for me).

while the mesh is nothing special and the UVW kinda sucks this model has abit going on in it. some parts are meant to be reflective, some light giving.
the problem is I edited one VMT with a new cubemap etc and suddenly the whole lot has turned the same, my self illumation isn’t woring and it just looks like a bland grey and slightly reflective surface…


it also seems to have little or no regard for lighting, and in complete darkness stays that same bland reflective grey