I have rebuilt the fuel pump for a 1978 115hp Evinrude, but I still have a leak. When I squeeze the primer bulb hard, fuel seeps out of the pump between the rubber gasket and the round plastic inlet cover. I have cleaned the surfaces spotless and the gasket is brand new, and the screw that holds it together is tight but it still leaks. Any ideas? The rebuild kit came with two gaskets, surely I'm not supposed to stack them? How about a fuelproof sealant? Thanks for any help.<br /><br />Ryan