I just bought a 2018 SX24 Tritoon with a Yamaha 150 Four Stroke. It’s sucking the gas more than we feel it should (we are starting to record this now to get more accurate usage) and the top speed with nothing on the boat but me as the driver is 32 MPH recorded by GPS. We now have 36 hours on it. Does this sound about normal?? A friend of ours has the 2017 SX25 with the same toons and same floor plan and he isn’t using near the gas we are and can run 40/41 MPH WOT. Prop is exactly the same. Obviously his boat is larger as well. Dealer isn’t being much help. Should I have someone else look at the motor??