not so much sources mate, but every time i began looking for solutions to all three levers i had, it always came up with other peoples posts with the same issues. maybe i was just unlucky, but my experience with them werent so good, though Shimano did repair the dura ace for for free :) i still have two pairs of dura ace i am using, and i have three pairs of the new 105 5700 range, but as the review said, i am not entirely convinced of the new range (seem flimsy and not as full in the hands), but people on Wiggle etc seem to vouch for them.
not so much sources mate, but every time i began looking for solutions to all three levers i had, it always came up with other peoples posts with the same issues. maybe i was just unlucky, but my experience with them werent so good, though Shimano did repair the dura ace for for free :) i still have two pairs of dura ace i am using, and i have three pairs of the new 105 5700 range, but as the review said, i am not entirely convinced of the new range (seem flimsy and not as full in the hands), but people on Wiggle etc seem to vouch for them.