last fall i got a 92 kawasaki 750ss for seven hundred on a trailer took it out once found out something was wrong... let it sit all winter started pulling it apart this spring and found it has zero compression in front cylinder and 80 on rear... decided to do a full rebuild. Had cylinders bored for just under 100$ .75mm oversized, got a top end rebuild kit from W&M performance for 200$ included pistons wrist pins all seals and gaskets replaced the reeds for 80$ rebuilt the carb for another 50$ put an oil block off plate on it for 15$. Basically a completely new engine for about 450$ with more power than the stock 750. I was lucky enough to have a good crank with not problems in the connecting rods. You can do it yourself for cheap if you know what you need and how to figure it out. I had zero experience with jet ski's before this project.