How to adjust Avid Elixir 1 hydraulic disc brakes?
The manual says they are self-adjusting but a shop told me you can adjust them slightly by loosening the rear caliper from the frame, squeezing the brake pedal gently, and tightening the caliper back down to the frame (to specs of course). Also, be sure not to loosen the screws holding the two sides of the caliper together, otherwise you'll let the fluid out and air in.