I'm dropping my '99 YZ400 off at the mechanic for him to service my forks. I just bought this bike used, so I don't know what the service history has been. I'm planning on doing most of my own work, but I'd rather have someone else do the fork seals. My question is what things would be good to have the pro mechanic do while the bike is in his shop...things that are maybe more advanced than my wrenching skills (i'm a beginner/intermediate level mechanic). Valve adjustment? Timing?