Man I hope I dont find anything. https://ty4stroke.com/threads/season-over-7k-miles-what-service-should-i-do.153071/ Here we go: Get your sled to this point(should do every season anyway) Remove Plugs(Mine all look same and running about perfect) Remove Valve Cover Use feeler guages to check spec on all lobes that are facing straight up from Tappet/Bucket and write down. Turn engine at primary CounterClockwise or remove Flywheel Nut Plug in Cover and turn Clockwise till next set of lobes is facing Upward in any position. I preferred turning at nut so I could keep an eye on the chain to ensure it didnt skip. This is position cam needs to be in to check #1 intake This is my results: Conclusion 5 of 6 Exhaust are tighter than spec. NONE are tight. In my experience I will go through all the work of getting them in spec and it will do absolutely nothing as far as driveability. It will always bother me if I dont and that 2 mph more thing! But perhaps Yamaha knows that at 13000mi they will lose some and by 20000 they would actually be tight. Now the hard part. Final specs(I tweaked #2E a size from what is circled) circled are whats in there now. Will be checking clutch alignment since Mag side bolt was a bugger to get in and clutch side went in with one finger. Cat Crap! I found some shims here. Some at dealer and used this kit. $65 highly recommend.