Does anyone know if KEY_PROP_PITCH_X actually does anything apart from move levers? I've been playing with the DC3 and looking at the SDK and can't find any reference to actually changing the pitch of the propeller blades.

 

[EDIT]: Okay, got my own answer. It helps a lot to have the throttles NOT at idle before testing.

Yep... little issue in the sim... prop pitch isn't controllable at idle.

Not necessarily a sim issue. As oil pressure at idle is much lower than in the normal operating range, this can be the case IRL as well.