I just bought the ski the previous owner said that it was good to go. He said that he had had the carbs rebuilt and the coils replaced. Heres what happens. It starts and revs out of water. but when I dropped it in the water it started ran in the no wake zone. but when I got to open water and throttled it up, it felt like it was mising. It has no power what so ever. And after holding the throttle for a while and letting off it smoked excessively. Any ideas???