If you're having issues with models or are looking for help on how to achieve certain results, feel free to ask in here.
Note: Please check the Guide section before asking questions in here.
Frequently Asked Questions on GTA modding
the FAQ is on 3DS Max, though can be applied for various app's
Lighting and Shading
#1 Why can't I change the smoothing of my model?
Your model contains duplicate vertices - this is a typical issue within GTA importers.