Need help with a surface

I’m trying to develop a midi map for the Zoom R24 used as control surface. I’ve worked out all functions except one: the rotary dial.

Dial left sends “B0 3C 41” and dial right sends “B0 3C 01”. I would like to bind these to moving the playhead left/right. How can I achieve this?

EDIT: This works:
<Binding channel=“1” msg=“B0 3c 01” action=“Common/playhead-forward-to-grid”/>
<Binding channel=“1” msg=“B0 3c 41” action=“Common/playhead-backward-to-grid”/>

However, I would like the step to be as small as possible (similar to the default Mackie behaviour).