I see no way to adjust the stroke on my M615 (SLX) brakes. Looks like the XT and XTRs have a screw specifically for this, do the M615s have any secret/inelegant way to adjust stroke?
The stroke has increased on my rear brake, presumably due to pad wear - and if this will be routine, I might look into replacing with XT. Or might a bleed help (I can't see how a bleed would matter, they're not at all spongy feeling).