i've SLX on my bike and they've been fine. mate has recently bought 2nd hand XTs. the front is fine (same feeling to my SLX). the rear brake, however, has no modulation what-so-ever.
you've about 10mm of lever throw till the pads are tight up against the disc giving a very woody feeling.
i've cycled the pistons in-out-in-out, put a drop of oil on them and given them a clean.
i've checked the caliper for air.
i've let some oil out of the system at the lever thinking that the system was over-filled.
got everything where it should be (pads back inside the caliper, pistons withdrawn) and topped the system up.
thought things were giong well untill we put the pads and the wheel back in and were left with the same problem as that we started with.
the lever throw is to the bar. on the second stroke it feels fine. on the third stroke everything is woody again.
the pistons aren't returning to 'start'. the lever throw is limited to 10mm or so.
short of bleeding the whole system (which i don't think will help) or buying a new calpier what can be done?
any help much appreciated.
cheers
J