Since I'm replacing tank with new, am wondering why I should'nt just grind off all gelcoat and glass hatch cover in. All hoses, sending unit, clamps etc. are new. Will still have access thru inspection port to clamps and sending unit. All wood has been replaced with new triple epoxy coated, drilled and filled all holes. Rather than caulk hatch back in and still be subject to leakage am considering permanently glassing hatch down. This tank should be impervious to corrosion since no water can be trapped against it. Anybody? Jimmy you still on vacation. Forgot to mention that the hatch cover was recored as well.