Just checked the valves on my 06 yz450f. This is the first time I have done this. It's been about 30 hours since the last check (checked at shop by previous owner when a new timing chain was installed). Bike has about 200 hours on it, original valves, most (maybe all) have been shimmed in the past. intake valves all look good, between 0.10 and 0.13 mm Both exhaust valves seem to be around 0.15 or even a little less. Could something else (timing, etc) cause both valves to be out? Also, i could have messed up the measurement procedure, though it seems pretty straightforward. thanks!