Stubborn Valve Seats & Screw Extractors

Maybe 3 weeks ago, a number of people suggested using a screw extractor to remove a stuck valve seat. Whoever it was, THANK YOU! It worked like a charm. What a cool tool! The face of the valve seat was hacked up all the way back to the rim. It would've been pointless to try grinding it flat - there wasn't much left to grind.
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