ok its been a little while since i was on i replaced my lca bushings on both sides along with my leaf spring bushings that were worn the strut bar bushing are in good shape. the only thing i can come up with is a tire out of round on the rear causing it to jump since the rear ends in these trucks are so light. the tires are new so i may be the rim itself. is there a way to straighten them or do i need to take them somewhere to have it done.