No way! I have that caliper and the difference is night and day, it's WAY WAY OTT most of the time, you can lock the rear just by looking at the peddle, at any speed. Defo does not need another master
Good to hear it does make a big difference, the miles I've done so far were just to make sure I'd put everything on correctly and nowt was going to fall off, and more importantly got me sums right and the wheels were in the middle which they are so haven't really pushed anything yet