"There's probably still air in the system "
Issue resolved:
Cause: Air in the system - Brake & Suspension Shop put rear calipers on the incorrect sides thus mounting them up side down. ie: bleed valve at base (air rises!).
ACT Brakes took less than a few minutes to identify this, 20 mins to remedy, then bled in the correct order and the ABS was bled as per recomendation in this thread.
Brakes work great for the street on the existing BMC
however to make it even better I'm putting on a new BM57 (17/16) to suit
Which I orderd just in case.
Thanks everyone for your help.
Lesson - check the obvious and mark the calipers FR, FL, RR, RL. Perhaps in brail for the blind