Hydraulic TOB with 3 finger Clutch

You confused me, isn't overcenter spring for the mechanial pedal assembly?
You, I guess, are using your pedal with the master cylinder.
I have a American Powertrain TOB with an old Airheart cylinder in the floor.
The MC returns the pedal with no spring.
However, the PP I was using, B&B 3200 lbs pressure, was too much effort for my leg.
I went with a McLoad diaphragm unit and have been happy with that setup.

Yes, the over center spring is for the mechanical assembly AT THE PEDAL and was added to assist the driver in pedal effort on a B&B PP. I was curious if anyone kept or removed it when going with a Hydraulic TOB.

You answered my question though: However, the PP I was using, B&B 3200 lbs pressure, was too much effort for my leg.