I just took a look at mine for the 24k service. Canada, I beleive, is the only place that requires a valve check at 24k. I was planning on letting the dealer do only the valves and I would do the rest myself since I've never attempted working on valves before.
Well, I got motivated and decided to look at them on my own and maybe save some bucks. Most of the job is getting the body and tank off the rest is pretty simple. I was fully accepting to move around some of the shims and even replacing some that were too far gone, BUT, I'm a lucky guy and all the valves were within spec. The valve cover gasket was perfect as well. My parts guy ordered me one but didn't think I'd use it, he was right. He even ordered some shims just in case I needed them. Didn't have to use any of the items my dealer ordered, they said no problem, we'll just keep them in stock for you for when you do need them.
For the service I documented everything and took a lot of pictures just in case Kawasaki says I didnt do the service work. I even took a picture of every valve and a feeler guage indicating the clearance. I'm fortunate in that I have a dealer that likes me and is willing to go to bat for me, hell, they even lend me their tools some time. (front sprocket aarrrgh
I encourage everyone to give it a shot, just read the manual and take a little time. After all whats the worse thing that can happen, you blow your motor, life goes on.