I checked the shocks (Bilstein) and don't see any problems. I did find that the front rubber helper spring were dry rotted and just crumbled when i tried moving them. I ordered new SumoSprings for the front so these show take care a lot of the swaying. Not sure if it will cure the banging. sounds like something is hitting the storage areas. I can't find any bad bushings and metal rubbing medal. I did notice that the older rubber helper strings were about 5 inches over axles which was pretty high.