Hello all, I have a 2002 Honda CRF450R that I am trying to adjust the valves on. This is my first time adjusting a bucket valve system and need some advice. When I measure the gap on both of the Intake valves the smallest feeler gauge I have .003 will not fit. If I am unable to determine what the current gap is how do I figure out the new shim size. I am guessing the gap is between .002 and .000. I have done alot of reading but unable to figure out how to figure it out if there is a zero gap. I want to do this myself instead of taking to a shop to save the money I don't have. Your help is greatly appreciated.