I recently purchased a 95 Seadoo XP with the 720 motor. After replacing fuel lines, filters, carb filters, wear ring, etc. I finally got the ski running ok from idle to 3/4 throttle. Above 3/4 throttle engine would act like it was cutting out so I played around on it for about an hour then on a straight run engine died out of nowhere. Long swim to shore long walk to boat slip got it home found 125 compression on pto side and 0 on mag side. Pulled heads found broken piston as expected. Pulled pistons found 100 scribed on top of pistons and SBT under skirts. Can this motor be sleeved with new pistons or is it bored as far as it will go?