I recently did full bleeds (first time) on my 2001 XT hydros. At the same time I installed new pads (Summit generic XT replacements). They are painted orange, so I filed the paint off the vertical edges to allow them to fit better. My old pads must have been REALLY worn down, since there wasn't much clearance between pads & rotors after installing the new ones. I did a few trips round the block to try to help bed the pads & rotors and make sure everything worked OK. Then it got really cold and I hadn't been able to ride that bike since the bleed.
OK here's my question: yesterday I took it to work and noticed that it seemed like I was pedaling a frigging concrete tank (granted, I've been commuting on a skinny-tired fixed gear during the cold snap, and now riding the Slayer with Mammoth wheels and 2.4 tires is quite the change). When pulling up to the door my front brake was squealing like a pig. I noticed when inside that both wheels would not spin freely more than 3-4 revolutions due to rotor drag. No wonder it was hard to pedal! The rotors looked centered, but just ZERO pad clearance. I think it's becausethe pistons aren't retracting far enough.
I really don't want to have to open the system and screw around with bleeding again. I was wondering if the following would work - remove the pads, adjust the bars to level the reservoirs, open the reservoir caps, push the pistons as far back into the calipers as I can, then close the caps and reinstall the pads. Is this a viable solution, or might there be another reason the pistons aren't retrating (or are they possibly gummed up somehow)?
Sorry for the long winded question but I'm pretty new to this hydraulic thing.
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Thread: Resetting Pistons on XT hydros