The back door on the driver side of my 06 KC rattles. I can push the bottom of the door in and out, but the top is tight. It seems that the striker (the upside down U thing on the door frame) is too far out, keeping the door from seating correctly. I tried loosening the bolts that hold the striker and moving it back, but the striker does not seem to adjust at all. Does anyone know how to adjust the striker or the latch assembly so I can get the door tight. I hate to take it back to the dealer. They will either make it worse, or they will say there is nothing wrong with the door.