[Junkers]

It is best to set the controls in-game, rather than through the settings.ini file. The Level Stabiliser maintains your altidude and keeps the plane level, it does not affect the rudder. The other command, Toggle Level Autopilot, actually toggles autopilot automation. What this means is that, suppose you were shooting with a turret gunner on your bomber and you switch back to cockpit view, if level autopilot is enabled the AI would take over, if not the gunner would not be controlled by AI unless you turned on the autopilot before leaving that position. I think that is what it does but I could be wrong.