I still have my first KLR (2008). It was still running with 100,000 miles on it when I got a really good deal on a 2011 with 300 miles on it and parked the 2008. The upper rear balancer shaft blew a bearing at 50,000 miles and took out most of the rest of the engine as I reported here recently.
I just picked up a 2008 with 10,400 miles. I pulled the right engine cover and both left engine covers to inspect some of the innards. I found an Eagle mike doohickey installed and the 2008 deep hole problem fixed. Whoever did the work left out one of the four thin little washers that go on each side of the two gear pairs in the starter gear train. I snatched one from the blown 2011. I also found a tiny oil leak at the water pump and replaced both seals there.
I adjusted the valves and checked the cam bearings. It is running and sounding good and should be ready for another 100,000 miles.