i have a 550 with a 650 motor... I just got the ski not long ago I notice on the water my full throttle is only half of what my freind with a 650sx is. His is completely stock and is way faster... what could be wrong? I currently am not running a waterbox could i have a leak somewhere? I also notice on the intake mani and on the bottom of my ski there is a oil/gas water mixture that is like a light grey color that is very thick. I clean the carb and tried tuning my ski and adjusting the throttle but that did not do much. Any help would be great!