'01 LW300 HVAC panel replace

I replaced the entire HVAC control panel last year. The blower selector
switch was fried and I couldn't find the switch alone - only came as part of
the entire panel - at $170...

Oh well, that's water under the dam. Now I notice that the A/C compressor
comes on (a/c request) one click CCW of floor heat (on the right side
selector knob). The old panel had the compressor kick in one click CCW of
Defrost+Floor heat.

The vent selector 'switch' is really only a potentiometer- the wiper of
which supplies a control voltage to a servo motor that controls the air
routing. That part is working properly. The control voltage also drives some
digital control -also within the hvac panel - that generates the a/c request
signal that feeds the BCM. The threshold of where this signal comes in is in
question.

I looked in the service manual to see if there was some calibration for this
but could not find anything. Anybody have any feedback on this problem?? I
can always try to re-assemble the old panel and swap it out into the new
module - just messy.

Thanks - Oppie