Great info. Can you share what bore you used on the corvette master and also the set-up you chose for power brakes? If i can do it inexpensively,I'll go power...

I wonder why the residual valves would add resistance... maybe the orface is too restrictive for the amout of fluid you have to move for bigger manual wheel cylinders?

I'll try to search for other people who have experienced residuals increasing brake effort.

Tj