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Registered
Join Date: Sep 2015
Location: Costa Rica and Pennsylvania U.S.
Posts: 3,301
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heads
A lot of the time when the valve seats are touched up after new guides there can be a bit of chatter from the grinding method and you always need to lap them in with a valve grinding compound.I bought my last tube on Amazon.Like Walt says after lapping them in use a little Prussian Blue ink to check the seat width.You will feel better to to do this yourself.Fred
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