Allegedly some models of Centaur brakes already have 40-50mm drop. Depending on how much metal there is left at the end of the slots you could just file away a few more mm to get a reasonably close fit. Risky but then that depends on how much you do file away.
Allegedly some models of Centaur brakes already have 40-50mm drop. Depending on how much metal there is left at the end of the slots you could just file away a few more mm to get a reasonably close fit. Risky but then that depends on how much you do file away.