Ive been trying to figure what forces are causing my the shrouding on the rear corners to come off and the walls to open. Since the back is not straight but pointed in the rear my conslusion is its downword pressure and the ceiling lowing. Ther are several sources of weight on the real including a spare tire on the outside and a long swing down shelf supported on the wall. I am not sure what is under the paneling for major support but I have heard its 1" x 1".
I think the structual solution is to run a cable from either side under the paneling with a turnbuckle and plates at the end to pull the side back in to the center. This would provide a stetchable support and allow the edges and the shrouding to be resealed and eliminate future strain.
