I'm running 6870GS (NOS) on an 11-40 cassette with no B-screw adjustment. The frame is a Surly Straggler, so the hanger probably meets MTB spec rather than road spec.
I could try it I guess but the hanger on mine is short.
@Emyr started
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I'm running 6870GS (NOS) on an 11-40 cassette with no B-screw adjustment. The frame is a Surly Straggler, so the hanger probably meets MTB spec rather than road spec.