Now why did I not think of that? Duh!
Thank you Dynon.
It's in the Installation Manual, p. 7-59
Trim and flaps position potentiometers must be calibrated Your SkyView display
utilizes onscreen wizards that help you do this. Go to the EMS Calibration Menu to
access these wizards (SETUP MENU > HARDWARE CALIBRATION > EMSCALIBRATION).
The take-off position will be shown as a green line on the trim widget. If you do
not want this marking on your trim widget, press NONE during the take-off
position portion of the trim calibration.