"Actions Settings / Device input value override" greyed-out for elevator trim

I am trying to increase the sensitivity of trim inputs (via yoke hat switch or keyboard), as I am finding the trim very slow to adjust on the Just Flight PA-28-161 Warrior II.

I read that this should be possible via the “Actions settings” (accessed by clicking the cog icon to the right of a control). However, it seems that for elevator trim, the required option “Device input value override” is greyed out.

Strangely, for aileron trim, the option is available. I have checked I am not using a locked control profile.

Can anyone advise why this option is unavailable for elevator trim, or alternative means of increasing trim sensitivity for the JF Warrior?

Screenshot 1 - “Device input value override” greyed out for elevator trim down binding:

Screenshot 2 - Same option available for aileron trim left:

Screenshot 3 - Selected presets not locked:

Save locked profile to a different name

turn on the Device input curve override or Device input value override.

Then you will be able to make changes to the curve or value.

That device may not have adjustable values.

The profile may be corrupted.