I had my mechanic rebuild the master on my 76 R90/6 single disk and massage the system, and find it pretty acceptable. There's a really good visual on www.realclassic.co.uk
in which the blokes in boiler suits explain the mysteries of the ATE front brakes.
RealClassic is almost
as much of a pisser as the Asylum.
Capital Cycle has the rebuild kits, should you need one.
Brakes only slow you down, anyway.
Dude, who stole your fifth gear?