Are u sury the ri ets the disks float on arnt siezed? Gentely bang a nut and bolt through them and use it to rotate them a few times u will feel them slackning off my x front brakewas the same for the mot untill I was told to free the flotes off as the disk on the x is designed to move side to side a little but not sure the z is the same tho

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Yamaha xt660x 2009 blue/gold mods= iridium plug, stage1+2, removed snorkel, blocked ais, akrapovric pipes, power commander pc3usb (pre made map), adjusted tps, dynojet 02 optimiser 30amp aux relay, smoked puig screen, oxford heated grips and brembo carbon ceramic pads, rfx 30mm bar raisers, puig long adjustable leavers, plus much more and a cheep �30 alarm which stopped it been stolen