Thanks, but I'm 99.9% sure my problem is completely related to the pads. Everything was fine until the new pads were installed. It would be a very strange coincidence if the piston just happened to get dirty enought to stick, during the two minutes I had the caliper off the bike. :think: My situation was: originally, a perfect working front end (just needed brake pads), then, ubolt caliper, install new pads, bolt on caliper...end up with sticky wheel. I'm thinking more along the lines of the pads being too thick. I may go ahead and clean them just to see what it does, though.