The bike has 9K miles on it. Idles a bit rougher than new when warming up. Had a couple issues in the last month with it not starting. The Kawi service chart says that they should be sync'd at 7.5K miles and plugs replaced. I didn't realize the 7.5K service was more than an oil change, so I just changed the oil (for like the 5th time) and was figuring I'd fight with the tank and airbox to put in new plugs. But then with the starting and idle issues, I thought it might not be bad to have the throttle body balance checked. Shop says it will take 2-2.5 hours. That's about $150. Not sure it's worth it since I'll probably have the 15K mile check done either late fall or early spring. I think I'm just going to swap the plugs myself and see if that cures anything. Bike is running fine when warm, just a bit rough when cold.