Overcenter spring rubbing

Also, you shouldn't need that other spring, seen in your picture. . The spring from the clutch to bellhousing determines your free play. Pedals aren't always even, my clutch pedal sits below the brake pedal. After checking geometry, it wouldn't be a bad idea to take that pedal cage out and go through it, its 52 years old. Bead blast, paint, maybe new bushings and grease.
I can talk you through the easy way to remove and install the spring. Or, you can do the washer thing.