Ultegra 6700 Triple...
It has been playing up the last few months and didnt like shifting up into the big crank from the middle but shifting up from the smallest crank to the middle was fine. Shifting down was no problem either.
I was riding the other day and was switching the big crank a few times with little or no trouble. Until i started talking to another cyclist and started following him went to get into the middle cog and it wouldnt gear down. The shifter was stiff and was like it was locked until i took the gaer cable off the front derailer. reconnected it and it still wont shift.