I have a 4 wheel disc set up in my 39 chevy.... Dual master cylinder is mounted below the floor... I bled the brakes and thought I did a good job... but now the pedal feels mushy and im not getting any air spurts when i bleed them...

Do I have to have the caliper below the master to bleed?

thanks
matt

http://www.flickr.com/photos/50657267@N08/sets/

1939 1/2 ton Resto-mod
1937 1 1/2 ton Is in the driveway