hi i have a 1998 seadoo that makes a rattling noise when running. my wife went through a few reeds and stopped a few meters away and the seadoo stalled. she tried to start it and it would not start. after a few minutes it started and now has a rattling noise. i checked the drive shaft area and it is clean. it sounds internal yet it also sounds like it is at the back. a little bit of vibration. it still has lots of power. any suggestions