Messed up my files

So i was messing with the pickups files by trying to make a different body and bed. So when I finished it i imported it into the .dae file and now my truck spawns without a bed and body also the things in the body. What I want to know is how do I fix this I've deleted the game redownloaded it, but it's still messed up. If you know how to fix please let me know I've been struggling trying to find someone with the same problem but cant find anything.(Also I now know I wasn't supposed to put it into the .dae without creating another one)

 

Verify the integrity of your game files, and perform a clean reinstall. Also, welcome to the forums!

 

IT WORKED THANK YOU SO MUCH!!! I was starting to lose my mind trying to do and all i had to do was go in and delete the files