• 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.

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