I have a pearson 34 and I am very frustrated by a leak. When it rains water leaks out from a reading lamp mouted on a horizontal surface near the bulkhead sperating the v-birth from the head. The back side of the lamp is in a storage bin...which is dry. The water seems to be collecting between layers of the fiberglass hull. I have sealed everything with no positive results. I have removed and resealed the closest port, the overhead hatch, the vents...even put caulking on the teak wood strip just above the port. Anyone have this problem and what is the cure?