You can't adjust the R.H. side, only the L.H. side by adjusting the door latch. I've never had trouble with it not sealing on the hinge side, though. I suppose if the hinge side gets sloppy, a new gasket would cure that.
After you had mentioned rivets on on earlier post, I checked ours, and it is held in with miniature carriage bolts, so they could be tightened if they were loose.
After you had mentioned rivets on on earlier post, I checked ours, and it is held in with miniature carriage bolts, so they could be tightened if they were loose.