Mechanics and Fixing Any Questions Answered

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Stoo61 in reply to @Netakure

So in the set up process, if I manually pull the cable too tight before nipping up the retaining bolt, it could cause this issue?

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snottyotter in reply to @Stoo61

GRX (and most modern Shimano road) mechs aren't set up like older mechs, you set the cable tension first in the trim down from big ring to line up the two lines on the mech, then set the limits, the H limit pushes the mech out further, it's not a limit in the traditional sense. Read up on the instructions, if you try and set them up old style the limits can interfere with them working properly which I suspect is what you may have done.

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Leshaches in reply to @snottyotter

Only issue I see with that explanation (which I’ve also seen happen) is that the shifting would’ve been problematic from the start, whereas Stoo61’s m was shifting well initially and deteriorated.