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    Ethanol causing lower RPM @ WOT?

    Hi: Last year when I winterized my '72 50 hp Evinrude, it was running perfectly. This week I took it out for the first time this year. Filled the tanks with 10% ethanol gas that we now have. Boat took significantly longer to reach plane, ran about 400 fewer RPMs less at WOT than last year...
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    '71 50 hp Evinrude prop choices?

    I've got the above engine, which is running fine, but I'd like a better hole shot from it. I know that the engine is not a terrific hole performer, but with a prop adjustment, I think it could do better. It's got what I think is the standard prop for this engine on it...13.75x15. I'm wondering...
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