great perseverance, and the square peg in the round hole Metric to SAE mating game is a ton of time wasted I've been there, thank you GM, ha ha
on the flare making, one tip I learned is that you don't need a cheater bar to tighten them in that little jig, just nice and snug and that's plenty, and debur debur, debur, and shoot some brake cleaner through the hard line after you made the flare to shoot out all the debry that fell in there that no one saw
and I just love this mono horn core support design!