hey sail fans have been tracking down a water leak in ceiling of the aft cabin on my o'day 322. finaly found where it was coming from yesterday during a afternoon thunder storm. the water is entering from the top of the edison pedistal and running down the inside of the shaft and dripping into the cabin. how can water get in this pedistal? the compass on top seems to be well sealed with a gasket. any advise would be appreciated. ken