I have a 99 1200xl it already has the oil block off kit done and I premix gas, The other weekend I was out running around the river and I was going along fine. pulled up to talk to a friend for 5-10 min restarted ski and went to head back over towards dock was cruzing along maybe 35-40 and started to loose power and then it just died cold. tried to re fire right away and it cranked slow kinda like a dead battery, this is not the case as batter was replaced 2 uses ago also tested battery once back at home that night and all ok. I retried to restart several times did refire and gunned it took off pretty normal for 500 feet or so and then just died again. had to repeat this over and over to get back to dock. once home I pulled plugs and replaced as they were quite fouled at this point. after plugs were replaced it would refire normally and rev but runs kinda rough and when let off the gas will backfire and then shut off... Im guessing a carb issue but I wanted to see what you guys thought? please help.