I ordered two gaskets from Rock Auto. Felpro#8985 and#8592.Thinking if it is not one it would be the other. (NOT).I think i need a thicker gasket . Does anyone have a different supply house with a different part no. and a thicker gasket .I do have a small leak with both of these FELPRO gaskets. OR is there some thing i can install ,put on or make one out of to make it quiet. I got the lifters so quiet now i can hear the leak when i goose the carb. Thanks