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Valve clearance help

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I have a 2004 YZ450F.. Should I change out the pads if I am at the lowest clearance allowed within spec? For the intake the clearance specs are between 10mm and 15mm. I am at 10mm clearance. The exhaust is between 20mm and 25mm. I am between 20mm and 23mm on exhaust #1 and at 20mm on exhaust #2. Not sure if less clearance is better or more clearance is better when it comes to measuring the valves?

pad #'s

Exhaust pad #1 - 185

exhaust pad #2- 185

exhaust pad #3 - 180

Intake pad #1 - 175

intake pad #2 - 175

Any help is appreciated... Thanks

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First, the difference between .10mm and .15mm is .002". Second second, when the spec is .10-.15, it means that .10 is acceptable. Yamaha always assembles the bikes as close to the minimum as possible, and technically, less clearance is better than more for a variety of reasons.

You're fine as you are. Leave it.

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those are my specs 10mm and 20mm they have been rock solid at those specs for the last 140 hrs that are on my bike. and i check mine every 20hrs. if your bike starts first or second kick they are in spec.

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Is there anywhere that you are aware of that sells half size(175 to 172.5) valve shims for the Yamaha yz450f?

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