Clutch pedal sticks in down position

OldmanRick said
Just a thought, did you happen to use a diaphragm style pressure plate instead of a lever style? If the radial spring on the plate gets over centered (over disengaged) it can hang up. Remedy would be to add freeplay at the top or limit pedal travel at the floor.
Pic of diaphragm and lever style below incase anyone was not familiar with them.

Yes, it is a diaphragm style. When I bought the car it had a lever style clutch in it and it took tremendous foot pedal pressure to hold it to the floor. This despite the fact the "override?" spring is positioned where it assists holding the pedal down. I will probably remove the spring first, and go from there.