Since SU2 it is not possible to adjust the display range on the middle display. If you turn the Tilt/Range knob only the right and left displays are changing there range.
Second this, there seems to be no way of changing the range on the center display. Also I can’t find a way of switching the transponder to mode C.
I have also been trying, no dice
Yes, you can’t do it, as well KingAir 350, but in 2020 you can do it, but it has disappeared in the new 2024. ¿? Instead of improving, they make them worse.
I am observing the same thing as described in the first post with the Beechcraft C90 under su2 v1.4.14.0.