Well I was just getting ready to sell my 93 xp and I went for one last test ride to make sure it's working properly and when I went to let off the throttle it was stuck at 4000 rpm in the water, I got to close to the dock and just swam it to the dock because docking at half throttle is difficult, so my question is why, do I have an air leak somewhere, the throttle cable is not stuck and the carbs were recently rebuilt with genuine mikuni parts and all fuel lines and fuel selector replaced. I pulled out of water and started it and it went full throttle so I shut off so I didn't damage anything, any help would be apreciated.