The 08 model has an issue with varying cylinder heights !!
If you have one that has an issue with overheating or has broken the wrist pin please be advised to go DIRECTLY to Kawasaki and open a warranty ticket with your dealer and call the 800 line.
You will most likely be calling and dealing with some folks that are very tightliped about it. Be persistent !
push the dealer and keep calling the 800 line.
Chaplin Kawasaki is the best bet for this issue to be followed up on.
the current 5 hour window for piston replacement is a good way to see if you have one of the bad units.
some have recieved new heads also.
Gus