I tried running a hose from the bleeder back into the transmission fill port with the engine running but there was 0 flow. I then tried with my vacuum pump and my wife pressing the pedal, of course after having pumped it several times, I get mostly air and after repeating this about three times and about 2 ounces of oil, there is no more oil coming out at all and the pedal will just go to the floor, this is with the engine running,(to fill the master cylinder bowl). The return spring is good. Sure looks like the m/c to me...