• Jesus I'm a terrible "mechanic". Got an Ultegra RX mech to replace the knackered 6870 one, took the 8050 off the gravel bike and moved it to the one missing a mech, little tweak and all running well.

    Got the RX mech on, shifts smoothly, but what's that? We're not able to shift into the small cog (yes, even in the big ring). H screw? Micro-adjust? HELP

  • Was it new?

    If it's not bent then...

    It's usually limit screws or if you've microadjusted it waaay too much in one direction, just like cable gears you could be off by a cog.

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