Air and Service

Before you guys get carried away. Start it up, warm it up, let it cool down, leak it down. Invest a few bucks in a leak down gauge and do it your self. (check Harbor freight) If it comes in somewhere between 3% and 10% don't worry about it. If it ain't broke don't fix it. Don't spend that money however because you will need it down the road. It isn't unusual to race one of these motors 4+ years with no problems. Change the oil. Keep it cool. Keep it just off of the rev limiter. Keep it the way it left Japan.

Honest Dad himself