Struggling with live.map / mapping UI abstraction

Hi,

I'm having an issue with the live.map object - in the patches I am making I am wanting to use incoming midi notes to produce gate signals as a modulation source. I'm using a sig~ to convert a 0-1 integer to a signal to feed into a Mapping (live UI abstraction). It does control some live UI knobs but doesn't seem to be scaling correctly - some knobs move across the full range while others only move slightly. I've copied a simplified example below sowing the issue. I've combed the web looking for a video or post explaining this but it seems to work without issue for others.

any help very appreciated!

Best,

Alex