Do a search in chine walk in this forum . — Excellent information available !! — If hole shot is good and youre over 60 on top , Id think motor height would be pretty close . — Over trimming could cause this problem . — Kittys dont like a lot of trim . — ( Throttle is power , trim is speed . ) Seat time is the biggest factor in learning how to handle it , and once you do I think youll see high 60s out of her . — Take it easy until you get a handle on it . — Hoss