You can also try alternate cable routing at the rear derailleur to change the pull, or use a device like a Wolftooth Tanpan to change the pull ratio to increase it. This YouTube clip shows it in action. They use it to get a rivendell silver shifter to work with a SRAM eagle 11 speed system:
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Last edited by icepick_trotsky; 09-27-22 at 09:18 PM.