i have a 1999 seadoo gsx with the 951 rotax motor. it only has about 30 or so hours on it. when i got it it ran fine for the first few times out then it started to blow either the 15 amp fuse in the enclosed part by the starter solenoid or the 15 amp battery fuse. even if the key is out of the ski it won't hold a fuse. what should i do to troubleshoot this problem? thanks!