Body Alignment?
 

I have a 4 in. drop springs and 2.5 in. drop spindles on the front. When I look at the distance from the inside of the fender to the tire it is different on both sides. The driver side has about an inch gap and the passenger side has about 1/2 inch. I know on the back of the vehicle I can adjust my pan hard bar to move the axle, what can I do on the front to make the gaps even. I was told that maybe my cab was put on crooked and to just loosen the bolts and move my cab.

Any advise to get my gaps even on both sides?