I have a 1995 9-6 lite (non-basement) that needed some work when I picked it up this spring. The 1" plywood that reinforces the front tie-downs had gotten wet and rotten from an old leak so it wasn't distributing the force from the tie downs, causing the fiberglass near the tie down holes to start to tear. I had to pull out the propane system and hot water heater to do the repairs, which included a couple extra layers of fiberglass, and this thing should be bullet proof now that I've re-sealed everything.
Reason I bring this up, is that many people think that water can't cause issues with fiberglass campers but that's not the case, as I discovered. Keep your seals in good shape and keep the water out and it should last a lifetime.
