Just built up a brand new specialized Crux DSW with apex mechanical. It has internal routing through the BB, which I suspect may be the trouble.
When downshifting, the derailleur won't go from 10-11 cog, but will jump down to 12th relatively easily. Any suggestions of what might be wrong?
I've removed cassette to check spacing and tightness twice. Restarted with cable, barrel adjuster and limit screws multiple times. Same issue always comes back.
Has to be a kink in the line somewhere right? Cable wrapped too tightly in to bar corner?
by madlovin_slowjams