Only way I could think is to somehow make the rain spouting take the water to that location and would be hard to do so. Get a rain spout extension that helps to keep the water from flowing down the side and staining it.
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2011 Cedar Creek Touring Edition our 3rd 5th
2021 F350 Diesel
Trailer Safer 5th Hitch
Medically Retired Marine Semper fi
Go on the roof and check the path that it's following. I'd probably be apt to run a line of caulk to force the water to go to the side.
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Officially a SOB with a 2022 Jayco Precept 36C
Checkout my site for RVing tips, tricks, and info | Was a Fulltime Family for 5 years, now we're part-timing on long trips
There are 6 models of 5th wheels in this Line,also they are made in the East & West and are different! Need more Info! 
Linear Mode
