the first m/c I took apart and no amount of seal would seal up the shoddy finish in the bore. after 24 OZ. of fluid through the second one , the air never went away , finally the 3rd one , and yes the CHEAPEST one in stock , bled solid after the first 5 strokes of the pedal.
Exactly! Would your old one clean up with a $8 hone job and $5 pistons? you could probably produce a better finish with that drill mounted hone than the aftermarket one. And you would be the final inspector......