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rozboonThey're done, too much material ripped out of the holes. I doubt a helicoil would even hold on to that very well.
p.s. never, ever, ever put epoxy in a screwhole you ever intend to perhaps one day remove that screw from. It's not there to hold the screw in, it's just there for waterproofing - a decent quality wood glue does a much better job.