While the bike is torn apart and there is easy access to the heads, its a good time to check the valve clearances. This motor has 5,000 miles on it, while that's well under the 15,000 service interval for normal use, racing makes that check more frequent. A quick rundown of how you can check the valve clearance with the specs for the intake cam- opener/closer & exhaust cam-opener/closer. While this isnt a walk through on all of the details, it should get you a good idea of what you are looking at.