Found a soft spot on my bedroom slide at the outside corners. Disassembled the bed and cut the carpet back. Cornners had bad spot a couple inches square. Bought some Woodrot liquid harder and cleaned all the bad wood out. I then used some epoxy to fill in and rebuild. A member of the Forest River forum said, and I agree, that it came in under the corner trim pieces.
Our slides have the trim piece with mitered corners and is held on with screws covered by vinyl trim. The water was getting under the vinyl trim
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