The very first time we had our 21RS out an a camping trip I was tightening the slideout brackets. I barely steadied myself by putting my hand on the cushion that goes on top of the table (it was still set up for sleeping). With a loud crack the top of the table broke off length wise (about 3 inches worth). I explained this to my salesman and he ordered a new one under warrany. When I put the new one down I found out the problem was just as I suspected. The ledge that the table rests on wasn't square making it too wide causing only the plastic edge of the table to rest on the ledge. I'm going to buy a long piece of wood and glue and screw it into one of the ledges to widen.