Well, I suppose you could be out of adjustment.
Get her up in the air. Unscrew the rods that takes up the play until you can jiggle it and push in against the fork with about 1/16 or less space. Then adjust it up so it just rests with pressure on the fork.
Ask someone to sit in the car and have them press the clutch all the way in. The fork usually moves somewhere between 5/8" to 1 full inch. I like 3/4". See if it moves enough. If not, you may need to make some changes in the master or slave.
My 7/8 inch slave was okay, but I had a .7 master for my ford clutch. When I changed to a dual disc like yours, I had to go to 1 inch.
Just my $0.02
