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valve check questions?

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Checked the valve clearences last night on my 04 CRF450. Intakes were at .127mm and exhausts were at .254mm. The .127mm are a touch under minimum spec of .13mm. Should I do anything about this (i.e. shim) or just monitor the clearence often in the future? Also, on the right intake clearence I had to really push hard to get the .127mm feeler gauge to slide thru. Should the gauge slide thru easily or should I push pretty hard to determine min. clearence? Thanks.

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