Does anybody know how know to pair the Flight1 GTN750 with the CS-L1011. I heard that you need to have:
HDG mode--on (autopilot)
GPS Mode--on (GTN750)
NAV source --OMS
I tried all these things and still the L1011 will not follow the planned route on the GTN750.

I also heard you need to set the GTN750 (in the GTN750 application) to have the autopilot track HEADING HOLD. However when I do this, you cannot select a heading in the simulator. Maybe somebody with more experience knows these answers?