*two reasons:

allright thank you

I already mentioned about that issue in the description where it turns black, which i do not know how to fully fix. The Rollout suffers from the same issue.

The only solutions i know how to deal with this issue so far are these tow reasons:
1: Lift the model slightly above the ground
2: Shine an Expensive Light or Shine a Flashlight on them

yakuza i have noticed a model error that has been persistent with every engineer shirt mod its spawns with the front torso facing down and when i bone merge it it turns almost compactly black and idk why it happens perhaps its a lighting error or maybe form the model facing down unlike the rest facing up that's what is causing the errors hope you can provide or attempt a update to fix the issues thank you