Looking for some suggestions/information. I have a 2003 250 WB. I am getting a small but regular infiltration of water into the bilge. Cant find the source of the water. Have done an inspection underwater and there are no areas of damage. Have also inspected all fittings and through-hulls - no apparent leaks. Anyone experienced anything similar? Could it be coming from the ballast - how? Battery compartment in the stern is bone dry. Possibly the pivot area of the swing keel?