Use a quality “easy out” screw extractor
For those of us who didn’t win the lottery, the offending screw must be removed the old-fashioned way. Be sure to use a high-quality screw extractor, possibly borrowing one from your local shop. File the top of the screw flat if necessary, so that you can get a drill started perfectly centered in the screw. Drill very slowly and carefully, checking regularly to ensure that you are drilling straight and true. You don’t want to damage the threads.
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