i have noticed that my passenger door on my 1996 suburban is sagging a little. It is not aligned as it used to be. It is even dragging in the striker bold a little. I looked in my service manual, and all they talk about is replacing the hinges. So i took off the interior trim and to my dismay, the hinges are welded on. So i cant adjust them. I think the slack may be in the door hinge pin bushings. Anyone have any experience with this? Can you replace the bushings or the pin and bushings and not the hinges? Thanks