I own a 1997 50C and in the process of having the interior updated i noticed a large amount of water is coming into my salon from the air plenums on the exterior both port and stbd. it appears to be getting worse. Just wondering if any other on this site have experienced a similar situation and what they did to correct the issue. I cannot pin point exactly where its coming from but the only joint (caulk) is where the plenum meets the hull side. I only assume it must be coming from there?

See attached photos and any help is appreciated.

air plenum stbd.jpginterior stbd.jpginterior stbd 2.jpg