I always trailered my 22.5’ Bennington. This past year I docked it all summer. A storm hit Pittsburgh in August. When I took it out after the storm the boat listed to the port. It never did that before. When I took it out for the season it listed very bad on the trailer (water in the port pontoon). I can not see a leak or crack in the pontoon. It is a 1999 22.5 Bennington LX. Does anyone know if this year had compartments in the pontoons? Also does it have air valves So I can presurize it? My next problem is finding an experienced person to repair it. Boat mechanics are getting harder and harder to find in my area.