Ok I removed the MC and after measuring yes the rubber pad (ok its the center rubber seal the "nub" pokes through) was getting squashed by the Wilwood MC rear protrusion. I spaced the MC out with a couple of flat washers between it and the booster. I had been preloading the MC. So, the brakes are not dragging and the pedal travels a normal amount before activating the power assist. But, the brakes are still very powerful/sensitive. The only thing I can think of to look at is the MC bore. Make sure Wilwood actually sent me a 1.125" bore unit. I'll have to pull it once again. After that....well, I'm out of ideas other than a bad booster. Pedal rod is in the lower hole. How powerful are your OE power brakes? Average? Comparable to other US power brake cars of the ear? Much stronger than that?

Thanks,
Dave