Anyone else having problems with Shimano XT Brakes. There's 4 of us who ride and we have all got Shimano XT brakes. The oldest set are no more than 8 months old. The oldest set are now onto the 3rd warranty replacement. My rear failed yesterday at Bike Park Wales and my front is on the way out. Both of the other rides the rear is failing as well.
The issue is that they all become very soft and the lever then pulls all the way to the handlebar. I checked the pads in my rear set (which are only 8 weeks old) and one of the pads has worn down completely whilst the other is 50% worn, so obviously a sticky piston. New pads in and the lever still pulls to the bar.