I purchased the Marquise for XP12 a while back but have just gotten around to trying to fly it. Flying in 5 blade OEM mode. (though I have the same problem with all acf versions)
I swear I am following the manual, but cannot get the AP to engage. In flight (or on the ground), engines running, inverter on, the TURN knob is centered (in the detent), the left radio switch is on, MASTER SWITCH normal and the aircraft is flying healthy, but when I hit the AP button on the center console, the YD ENGAGE light comes on, but the AP ENGAGE just doesn't.
It makes me sad. Does anyone have any idea what I've missed?