 Update
I got a call from the shop today. They told me the car was ready to be picked up. They had again replaced the clutch disc and pressure plate and indicated they found no mechanican reason for my problems. They even remarked how everything appeared to still be new (duh).
Anyway, I went to pick up the car and when the mechanic tried to put it in gear to drive it to me in the parking lot...guess what?
The shop owner told me he and the mechanic had driven the car around all afternoon with no problem after finishing the job. Now it's doing the same thing with all new parts. The system has been bled and re-bled (reverse bleeding).
We're stumped. | 
