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JB
@JB
Shimano 105, but happened with the Chorus one as well. Regular shifting with the 105 derailleur was actually really good, maybe even better than with the Chorus one.
@Hulsroy
My theory is that when I'm accelerating hard out of the saddle, the frame/bb area twists so badly that the cable tension increases, pulling at the lever side. I can hear the shifter clicking, and when I don't trim the derailleur back it will eventually shift to the little ring.