Ok, so I took the boat out yesterday & it ran great! It was me & the wife & our two year old granddaughter. The only gear we had was a small cooler with a couple bottles of soda & a bag of ice, a bucket of minnows & a couple rods. 10 gallon fuel cell full & two deep cycle batteries are the only hefty items in the boat. With that load, at wide open it turns 4600 rpm's at 28 mph. The speedometer in the boat said 25 but I know it was running 28 because the CO showed me his radar gun after pulling me over for speeding. Just a verbal warning thankfully. So, I'm a little ways off of the 5500-6000 rpm's that it's supposed to run at. As far as I can tell the prop is the correct size that came on it from the factory. It's 13.25 x 17 & the original owner bought it new & lost a prop but he said the replacement was the same size. He could not remember what rpm's it ran when he had it & he said it had never been messed with as far as the motor goes. I'm going to start a new post concerning whether the carb linkage is working correctly & opening all the way or not as I mentioned above. Thanks. Jim.