I just purchased my xp a week ago. The jet ski has not run in a while. When I press the start button, the engine will turn over but won't start. I changed the plugs, battery, and plug caps. I think there is a spark. I noticed when I pulled one of plugs, there was allot of gas on the plugs. I also noticed that the throttle was stuck. I could barely squeeze the throttle. If I where to clean the carbs and free the throttle, will it start? please help.