Car pack - the pafinis machine (Grand Theft Auto 5)

Hi guys this topic has 1 Kar Pak for 310 vehicles in General are satisfied. The question is - what could be the reason that some machines are not fully drawn? That is - some have grey headlights, do not Shine. Some salon grey, I hope the overall idea is clear. The joke is that he stood up absolutely fine, that is, all the machines are clearly drawn, and sometimes gets so.
I use fashion to graphics, realistic control and worked with them norms.
Another question - do I have to install to the mods folder? This fashion statement is first to copy a few files from the GTA folder mods, then the mod is installed in mods. The logic, if not in mods to put it without copying, in General, tell me what's the matter, not yebo what - angry.