Thanks for all the help with this, as usual I have learned a lot. Last night I was able to do the ABS cycle correctly and it does pulse the handbrake and brake lever, did it many times. I bled the rear brakes, flushed them with half a bottle of fluid! Cycled the ABS probably 10 times as I bled, filled, bled, filled. The old fluid was not very dark but it was think and nasty, so my bad. No residue or sludge in the reservoir. Got it all flushed and went for a ride. EVERYTHING is fine. Normal front and rear brake, normal unafied brakes, no stiff rear pedal no ABS light! Rode it for about half an hour, pushed it till ABS came on many times. Really seems 100%. Time will tell but I may have dodged that bullet. I need more fluid so I can do the fronts, then the rears one more time. Thanks everyone, really appreciate all the help and comments.