Has anybody experienced this? Hard, high pedal with engine off. Pedal goes almost to the floor with engine on. New mc, no air, (pressure bled) servo working, (brakes bite and stop well. No vacuum leaks, (one-way valve is OK). Only problem is this long pedal travel and slightly spongey (no..."springy") feel when the servo is being operated by engine vacuum. No reason to suspect servo is defective as it's holding vacuum and is doing it's job.