Solved the old issue, instead of creating a new thread I’ll just edit this one.
I’m using tdmcars, I’m attempting to change the skins of a police vehicle. However, the only one I could temporarily get to work was using skin 3 however it applied skin 1. I’m now attempting to use skin12, i’ve got both skin12.vtf and skin12.vmt. However it simply uses the default skin.vmt and skin.vtf