I've got Shimano servowave levers with the hi/lo settings. Currently set in the middle position, I'm not sure if changing this would alter anything.
+1 to M_V's answer. Best performance with cantis will be in the H position (effectively moves the cable position closest to the lever pivot), but it won't be an ideal match.
+1 to M_V's answer. Best performance with cantis will be in the H position (effectively moves the cable position closest to the lever pivot), but it won't be an ideal match.