We just put the C5 brake conversion on and our bias (despite having a prop valve) is odd. The best I can describe it is that I have way more braking in half the normal pedal stroke. Essentially, I've lost some braking resolution. We have some ideas on how to fix it.
We have some Moog offset cross shafts and then we cut our factory cross shaft as our spacer. We also ordered custom bolts from McMaster Carr to give us the extra length we needed.