leakage problems

Had my boat out for the first time last week. The self bailer in the rear of the boat was bad and I had to oder a new one from D&R, which by the way did not fir and required modification.
When I removed the old self bailer, water started dripping out from the plywood between the galss bottom and galss floor. It was not a steady drip but lasted all day and totaled about a half glass of water.
Does anyone have any ideas where it might have entered from. There are no visible cracks anywhere on the bottom side.I am letting it dry out before I install the new bailer.
Thanks for any info
jack (jacmar007-at-prodigy.net)
When I removed the old self bailer, water started dripping out from the plywood between the galss bottom and galss floor. It was not a steady drip but lasted all day and totaled about a half glass of water.
Does anyone have any ideas where it might have entered from. There are no visible cracks anywhere on the bottom side.I am letting it dry out before I install the new bailer.
Thanks for any info
jack (jacmar007-at-prodigy.net)