I suppose I'm lucky but I have never used a pressurized system to bleed brakes. I have on a few occasions used a bottle with some brake fluid in it, cut a small hole in the top for a line to slip over the bleed screw and into the jar/bottle and then pump slowly until all the air bubbles are gone.
I know many of you/us have done this and you may want to try it. I had an old 47 Plymouth that fought me all the way and it was the above method that finally whipped it......just saying.
