I just bought a 04 4x4 duramax, I am new to these trucks, the passenger frt tire is cupped on the inside. You can see that the tire has some slight camber to it, what does it sound to you guys? I was thinking of doing the control arm bushings it looks like I can get a kit for uppers and lowers from autozone for about 65 bucks? Any help would be appreciated. Truck has 91K miles w/ leveling kit and 305's.