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So I have a 2014 G21. 409 engine. Plenty of power where I live but just got back from a week at Lake Powell that is higher elevation and struggled with the ballast tanks full and a lot of people in the boat. I have the stock prop 2561. Acme recommends the 2569 for high altitude. Has anyone done that? Do you notice a big difference? Size same but the "cup" is .060 on the new prop and .105 on the standard prop I currently have. Any suggestions?
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