A strange problem has just appeared with my rear Avid Elixir R. When I got the bike out the garage yesterday to go ride, the dead band on the rear brake was non-existent, I'd literally pull the lever and it'd bite. However, after riding it for a few minutes, it'd return to normal and the bite point would be the same as the front brake (set up how I like it). I noticed it appeared again once I'd left it for a little bit on the train home, it'd be well too sharp. It's almost like the opposite of trapped air?
Any ideas? Thanks!