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Hopefully, there's enough adjustment in the shims to re-establish proper clearance. If not, you're looking at new valves and possibly installation of new seats.

With the head off, I'd be tempted to install new Kibblewhite valves (They're SS, not titanium like the OEM). They will last longer, and take abuse better than the stock valves.


If you download their catalog, there's a neat story about the founder, and cool pictures scattered throught out the rest.

This is a common modification to these high strung 4 strokes.
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