The Hyd clutch systems are different , Keisler has the worst design possible , you fill the master & pump for a couple of days as there is no bleeder at the bottom slave cyl , so the air has to work its way back up through the pressure line , I usually pump it for a while & let it sit so the air can rise up the line . This can take days to accomplish . Why they would not have a bleeder screw with a line out to bleed it .
McLeod is far better with a bleeder on the slave cylinder , it will bleed out in minutes , far better !