So after lots of practice i may have finally figured it out, Maybe. First 2 pics below are the first attempt, and i somehow got in my head that .002 was .020 so these were undersized a bit. Next 2 pics i think i went too deep on the threads and made them very sharp. And the last pic i think is just right. Ive got to figure out which brake i want so i can order it and test these plugs. Who knows, i may be back to the drawing board!!! I am no machinist, im trying to do my very best with what little i know. Any help will be greatly appreciated.