Hello all, 1987 Catalina 30 Mk II owner. I’m getting a freshwater leak into the bilge when it rains, whose origin I’m trying to track down. Yes, there are a few drips from portholes here and there; but they all have a clear path to get down onto the bilge more or less directly. There is a leak that is coming through the bottom of the bulkhead on its way to the bilge, which has caused some soft wood there. Could it be that rainwater intrusion into the mast is pooling at the bottom, then running down through the deck via the hole through which mast wiring comes down into the boat? How do I confirm this hypothesis, and if confirmed, what crafty options are there to put a stop to this?