Newbie w/ 1994 SP, cavitation problem

[Stumpotto]

I have recently bought a 1994 SP, 587 jetski. It seems to run ok, but it cavitates alot on choppy water and som e on smooth water. What can I do to lessen the amount of cavitation. I keep hearing things like ride plates and new grates. Please help with how and where to get the correct remedy for this proble,

[hotrod_sxty8]

how's the wear ring?? and the impeller? hows the clearance between the two? if there is too much space between the two it wont work right and cause cavitation. I have the same thing going on with my 93xp and it turns out that half of the wear ring is gone. I didn't notice it at first but I was checking everything out on the ski to go out this weekend and got out a flashlight to look at the impeller and saw that the back half of the ring was gone!