Crack in outside wall... November 30, 2020, 08:26:54 pm Hi, first post here. Tried the search but didn't see my exact issue. 2006 Gulfstream Endura 6340. There is a crack in the outside wall on the drivers side just behind cab where it meets the upper slide corner. It appears that the overhead cab is sagging quite a bit. Has a lot of bounce going down the road. Anyone had this issue or could give any insight to repairing it short of just taking it in and having it done?