The bracket at the top of my door was loose too. I just two hammers, held one underneath against the pivot rivet and gave the rivet some heavy blows on top with the other hammer. Now it is nice and snug.
I have another problem. The arm at the top is too short and won't let the door open wide enough, not even 90 degrees. Very annoying!
I was told by Monaco that two brackets were made for the coach, one several inches longer than the other. Obviously mine has the shorter bracket. They want about $120 for the longer bracket and I'm too cheap to pay that kind of money for something that simple. I'm wondering if I can remount the bracket, (both ends) a little closer to the door hinge. It seems that would allow it to open further. Has anyone ever done this?