Adam, our 1981 36 had a tiny amount of water traveling from the opening port in the head but it could be from any fitting nearby on your port side. It’s a difficult place to diagnose a leak. It would travel down the bottom of the bulkhead in the recess moulded for the bulkhead. Took me a long time to pinpoint the problem but I ended up using a water hose and lightly spraying the deck to simulate rain checking each deck fitting starting with the chainplates. Our ceiling panels were not an issue. Have you looked at automotive vinyl to recover the pieces, if I remember correctly that’s what mine looked like. Len
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