It is possible that the carb is clogged again....
I have a 96 Seadoo GTX and the fuel lines are B Grade Marine...long story short, the E-10 fuel ate the fuel lines...created a goo inside which was depositing in the carb. I rebuilt the carbs twice, but the problem was not solved until I replaced all the fuel lines with A Grade Marine (I also changed the fuel selector switch).
Hope this helps
Jetskier