bNd, I have the exact same problem, at the same place, on the same 2010 Cougar HC 291 RLS. The panel is sagging below the level of the adjacent panel for about 1/3 the width of the trailer.
As it is sagging below the level of the adjacent panel, the joist is not under the panel for the entire width. It must not have been installed at 90 degrees to the wall. (Considering the quality of Keystone’s work, I am not surprise)
When my brother gets back, we will:
1- Remove the air conditioner.
2- Remove the edging gutter on the back and both side of the trailer.
3- Peel back the membrane up to the problem.
4- Then we will see what need to be done; probably have to remove a panel to fix that.
Of course, we will have to re-install everything after that and re-seal.
Lots of fun….
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Quiroule:
2018 Ford F150 XLT
Your children and grand-children will not remember what you did for them, they will remember what you did WITH THEM.
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