2007 Sundance 3200BHS, Just discovered the left rear corner has been leaking where the roof-rear wall-and side wall come together. Poor design, they created a dam in the rear corners where the trim meets. Anyway, the rear wall is soft (real spongy) when you push on it from the outside, and the roof and the 2 rear rafters are shot, (about 1-1 1/2 square feet). I think I sealed the leak. Not sure now if I should pell back the rubber and try to fix the roof or just let it go.Can't notice any damage from the inside. I am really disappointed and depressed because when we originally ordered it in April 2006, they were all aluminum construction, one of the selling points for us. It came through as a 2007 model and they changed the roof and floor to wood. ANy one else gone through this? Did you fix the roof and walls after it was resealed, or leave it alone?