• I've found it can often be a little off.

    So did I, usually because the bolt often move the calipers when tightening up, which is a bit annoying.

    a tiny dabs of copper slips between the washer and bolt work reasonably well.

  • I have the same issue with my Shimano BR-CX77. Do you mean out copper slip on the ID of the washer as opposed to its upper/lower surfaces? I'm keen to give this a shot.

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