At the old place a neighbor about 6-7 houses down was a machinist, and he said he would drill and tap it for me if I ever took the carb off the engine. Kind of ashamed to say that I haven't gotten that far yet....
Regardless, I'm off to Google this tap remover tool.
Thanks!
(Edit: @RustyRatRod: Not that I'm going to buy a Chinese tool on Amazon, but is something like this what I'm looking for? Non-metric, obviously....)