At some point I wiped out on my 2009 Trek Fuel EX9 with Avid Elixir R Custom SL brakes and bent the brake handle reach adjuster bolt, causing the lever to be stuck at an awkward amount of reach with no adjustment possible. The fix is easy - Avid literature and several youtube videos describe what you need to do. I purchased an "Avid Elixir Elixir CR, Elixir R, Code R Lever Reach Adjuster Service Parts Kit" off of ebay for $12 and it had all of the parts I needed. This repair does not require you to release hydraulic pressure in the system.
Pictured below are the bent bolt on top and the replacement bolt on bottom.