My Avid Elixir CR are not working correctly. The rear brake worked fine all weekend and yesterday. Today it just isnt there. It stops, but when you pull the lever in it goes all the way in to barely grab the rotor. Then the lever doesnt rebound fast it just kind of slowly moves back out to the grabbing position. Any suggestions. A little background, These are 2011s, it was bought just before Windham World Cup. Has new pads and fresh bleed as of Late July or Early August