I'm restoring a 1987 Amberjack. I've redone the Hatch, Anchor locker hatch and Bow pulpit. Now the problem. Inside the locker there is a "tube" molded into the hull. It goes down thru the locker floor and exits into the interior below the mirror and into the base of the cushions. a couple inches below that exit hole is the thru hull bolts from the Winch eye. problem is, there is dampness at that hole which makes the material on the "wall wet. I have not found anywhere the water is coming in. HELP!!!! obviously the first problem is findin and fixing the cause and secondly, determining what that "tube" is for