I finally found a hitch and went to install it, just 6 bolts, and then come to find out that 4 of the 6 holes that are threaded into the frame have shifted to the side just enough so that I cannot line the bolts up and screw them in. The holes line up but the threaded piece does not. Is there an easy fix to this or do I need to bring it in somewhere? Any tips on the wiring assembly install as well?