I spoke with Rob in warranties at shimano Aus, he was a legend. From there I dealt with Mitchell via e mail, again awesome to deal with and it was resolved super quick, zero fuss. And the results are just as good. Pumping gone.OK, I've got a set of m8000 brakes that I'm not real happy with. Can someone who has had theirs replaced fill me in on the details - contacts at Shimano etc? Cheers.