hello I just bought a 2003 seadoo gtx sc and iv put about 20 hrs on it and its now at 90hrs just the other day I was riding it and the speed cut out and it will only do about 35mph I believe its a supercharge problem but from what I have heard the 2003 did not have washers to replace so where do I go from here im a big do it your selfer but have never worked on jet skis so any help would be nice (how expensive)(where to buy parts)(what I need) how to remove) all help would be very appreciated