I am rebuilding the fuel pump on the above engine. I have it back together, but the last part in the round plastic fuel intake fitting that screws to the fuel pump body. There is a rubber gasket that seals this part to the fuel pump body. The rebuild kit came with two gaskets. Is one a spare?? Do I use the both, stacked on top of each other, as with only one, the intake fitting doesn't seem to seal very well. Any advice is appreciated.<br /><br />Ryan