Hello, In my '56 evinrude 3hp lightwin, I'm missing the boss gasket that goes in the carb. the thick one that is centered in the float bowl and the high speed nozzle goes through. I hate to have to buy a new kit for one gasket. Can soneone tell me the size (o.d., i.d., and height) so maybe I could make one or find a close replacement. Believe it or not it ran fine with out one, but I'm sure it needs to be there. Also any place to get a high speed needle valve ? -thanks