I'm trying to put the VCP hatch that CLC sells within reach behind the cockpit on my Chesapeake 16, where the deck radius is a little more than 24". The radius on the hard plastic flange of the hatch is 0- or flat, so each side is about 3/8" above the deck at the highest point. Should I build up the deck with wood or epoxy and wood flour to fill the space? Or, should I try to bend the thick, hard plastic flange to match the deck radius, or recess the flange somehow? Anybody got ideas?