Not to be the bearer of bad news but, I had the same problem with a Wildcat. Same build as the Cougar. The front four feet of the sides are plywood before it gets to the aluminum framing. The thin wood the filon is glued to, is glued to the plywood. The front framing behind the plastic cap is wood. When it leaks, it soaks the plywood and the problem begins. You reseal thinking the problem is fixed but a year down the road, it delaminates while driving down the road and starts bowing out. You can replace the plywood but the leak is a common problem due it the movement of the front cap. I repaired mine twice before I traded it in on a new unit.
