U ever get this fixed? Sounds like a bad MC. Purge the MC and inspect the push rod and all gaskets for score or wear. Coat with lubricant and bench bleed, if everything checks out - Add synthetic brake fluid in place of all the air down through SC. What took place before the symptom? Fast or hard shifting? How does it shift in and out of reverse? How does the pedal react? Do YOU suspect a tranny sync?