[Uhehner]

Use soapy water and a garden hose around the base of the hatch first. Keep the plexiglas dry while doing this. The soap helps break the surface tension and if that is the problem it should leak immediately. If you don't get a leak there move on up with the soapy water and hose and flood the Plexiglas in small areas. That should locate the problem. Maybe try covering the Plexiglas seams with electrical tape and see if that stops the leak. Also check that the hatch dogs pull it down tight and squeeze the gasket. Capt. George