clutch not releasing?

so this weekend we tore the truck down and converted it from an allison to a zf-6. the conversion went suprisingly well except for the fact that my clutch wont release all the way. when i push my pedal down it goes down about a quarter of the way before any pressure starts then you push it to the floor then it starts to feel like the clutch pedal should. sometimes i can get it in 3 4 and 5 and it will sit there but not all the time.... Anybody have any suggestions?