I have a 1989 18.5 hunter which has developed a leak in the cabin. I believe there are two possible sources: Holes from the Deck hardware or the Deck to Hull seam. Rebedding the deck hardware is not a problem. How can I caulk the deck to hull seam? Would I need to remove the rub rail? How is this done? Are there any other possible sources for the leak? The leak is mid way in the v-berth, but the source could be elsewhere due to the liner.