Speedometer and Perfect pass are off 3-4 MPH. When I first ran it the MPH would top out at 43 but the perfect pass was at 39. When I calibrated the MPH to match the perfect pass the boat was topping out at 39.2MPH at 5000rpms. Thats with no ballast. I know generally your not gunna hit that 50mph mark on the speedometer but 39 seems a bit off. The paddle wheel has even been replaced and im running the stock prop as well. Anybody know whats goin on or had this problem before? I even brought my GPS and it read 39.2 when the boat was at 5000rpms
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