With the 215hp motors, you need to watch out for exhaust valves. I hear the stock valves on models up to 2007 had a tendency to snap off and fall into the motor causing all sorts of calamity inside. Also, superchargers need to be rebuilt every 100 hours or so. Last but not least, some people will tell you to replace the flywheel bolts with new ones, but that might have been a non-issue at some point as I think Seadoo fixed that problem. Also, there was something about timing chains on years 2008-2011 (I think). Sorry for all my uncertainty, I have an 03 and am mainly concerned with that model year.