Yup, pain in the butt. I know on the caprice, each side of the bumper support mount(where it mounts to the impact piston flange) there's 4 slots with 4 nuts that can be adjusted and tightened. Theres a plastic piece on the support that has the threads for the nuts, that can be adjusted up and down whereas the slots/nuts are left and right only. If any of that makes sense.