Happened to us early-on in our 2016 Chateau Super C 35SB... I went up on the roof and found some holes in the sealant where the roof and curved front over cab "fairing" (for lack of better term) met. I caulked them and have not seen the leak since... not sure if that's the actual cause or if we've just been lucky though.
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2016 Chateau Super C 35SB
2014 Honda CRV dinghy
Colorado-based
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