Hey Ed, how did you make out with the MC/bleeding?
I just got the sandrail(customer car) back and finished the brakes today. I had replaced the MC and wheel cylinders a few weeks ago. Wilwood 3/4"(19mm) single action MC, 4 stock wheel cylinders on wide5 drums. Also new drums in the back and cut the front. New shoes all around. It also featured a turn/cutting brake. Could not get a good pedal after a quart of fluid passed through it and bubble-free. Second pump was great, but the first pump almost went to the floor.
Installed a Wilwood 10 pound residual valve today, and got much improvement. But it was still a bit of a low pedal. Removed the turn brake assembly and replaced it with a brass brake Tee. 10 minutes later, all air was gone and finally had a nice high and hard pedal!
The CNC turn brake had seen better days methinks. I followed their bleeding instructions too, but it just wouldn't allow the air to escape. Oh well, he doesn't off-road anyway. So why does he need it?
Anyway, the residual valve does help with drums AND a MC lower than the wheel cylinders, for anyone's future reference.