So if I grab the back edge of the door when it's nearly shut, I can lift it on the hinges about 1/4 inch (well not straight up and down, but there's about that much play at the back edge). My understanding from another forum is that there are bushings that can be replaced. Does anybody have part # for those bushings? And should I replace that locking cap on the hinge pins, or is there anything else I should replace besides the bushings?