[RICK LAKE]

nedchap I fork setup should run a spring to stop the wearout of the thrownout bearing. Been running them for over 30 years. Era has a master slave cylinder setup on there cars and run a spring unless it's a hydro thrown out bearing. In this case the fluid pulls the bearing surface away from the pressure plate forks and back into the master and mini tank to hold the fluid.
You can try without a spring but if you hear a squeaking noise with the pedal out and disappears with the pedal in, that's the hydro bearing rubbing on the disc and wearing out the surface of the bearing. My clutch takes about 2.5 hours to swap in the car. Some cars take alot longer. Rick L.