Hi all. Just checked my valve clearance for the first time. They were all in spec just over the tight side of the range. I have around 15 to 20 hours on the bike. My question is this: Do you think that they will get any tighter or should I be past that stage with this many hours on it? One thing that kind of concerned me was that there is no mark on the flywheel that lines up in that opening when the marks on the camshaft gears are lined up with the edge of the head. The bike runs and starts great, so I can't believe the timing could be off. Have you guys found that some of these flywheels are marked wrong or not marked at all? I did see three small lines on the flywheel but they do not line up like the manual says they should. Also the manual shows a large single line as a marker. I hope I'm not asking stupid questions but I'm new to the 4 stroke thing. Any help would be great. Thanks. P.S. This is on a 01' YZ 426.