I finally got my Seadoo up and running correct but now I have a new issue. I just got back from my first trip to the lake and the engine ran good but the boat would not go over 20mph. It acts like a slipping clutch on a car. When you first get on the gas it will just up to go and then the RPM rev to 5000 and it does not go any faster. it feels like an outboard engine with a slipping prop hub. So what needs fixing now?