This Aircraft is a very special bird in so many ways, and I am seriously impressed with what you create. The Panel is a master piece by itself, and imo not easy to learn all the units, which is a good thing also as I appreciate the learning phase just as much!

Its great that we can ask questions etc in this Forum, Thanks.
Dave.

I Love your Aircraft

The two course (CRS) knobs are used to adjust the active and preset navigation courses. One might expect the CRS1 CHP knob to adjust the active navigation source and the CRS2 knob to adjust the preset course; however, they actually control the pilot and copilot’s active navigation source unless the associated CDU is displaying the Preset Nav Source screen.

The FAQ provides some more information:

Counterintuitively, the CRS2 knob does not always control the preset NAV course. Instead, the CRS1 knob controls the pilot’s side active NAV course, and the CRS2 knob controls the copilot’s side active NAV course. Both knobs will only control their respective side’s preset NAV course when the on-side CDU is displaying the Preset NAV Source screen.

Always let me know if you have any questions!