I'm getting more leakage into the hatches of my recently built Chesapeake 16 than I like. It looks as though the covers didn't take on enough radius, and even with the straps very tight they leak when sprayed ( and not real forcefully) with a hose. I'm thinking of putting a bright flashlight inside to acertain where the gaps are. Any hints on building up the gasket or other solutinons? Thanks!