In what way do you have no brakes? Does the the pedal just goe straight to the floor? If so, and your sure you've bled the system properly, then your MC is probably shot. But if your losing fluid between the servo and MC then that won't help either.

Chances are when you bled them the first time on the original MC, you turnt the seals back on themselves, since the the piston never normally travels that far in the MC.