Had been struggling the last week or so getting it to run right. It had a fuel delivery problem that turn out to be a venting issue for the fuel pump. After I got that sorted out I found out it would flat die on me if I went over 8000rpm. Weird thing was it would only die if I rolled off the throttle quickly, like you do when shifting. Figured out it was a flaky throttle position sensor with the help of the kind folks on the kawasakiversys.com forum.
In the process of sorting this out I had to run it up to 9000rpm+ several times and I gotta say, running it up to 85mph in third gear at 9000rpm, well it's rather un-KLR like.