I recently got my truck back from the shop after an accident that dropped my rear drive shaft, and crushed the entire right side from bumper to bumper moving the rear wheel 6 inches back. Now anytime I accelerate, and sometimes even when maintaining a constant speed, there is a tambourine-like rattle coming from the right rear side. I just fixed a leak in the rear diff hoping the loose gasket was the source of the rattling, but no luck. Does anyone have any idea what this could be? Thanks!