I just recently purchased a used 97 Seadoo XP and have had problems with it since. It seemed to have a carb issue because when you give it gas it bogged down. It cranked fine, but would not come out the water. I rebuilt the carbs, changed fuel lines, and put new plugs. It cranked when I first put the rebuilt carbs back on, but died right after. It hasn't cranked again. The spark looks really low when taking the plug out and spinning it over. Any suggestions?