@marckc Here's a reply direct from the developer for you:
'Thanks for the feedback. I believe the right yaw was caused by an overly aggressive setting in the aerodynamics config that was intended by Asobo to "help" users with torque effects on takeoff, as the SDK suggests that this force is increased based on the assistance options. Since my users don't need any hand-holding, you won't see that behavior in the next update, which will be released very soon. The same goes for the elevator trim position, though that is nothing wrong with the aerodynamics, just the position of the indicator. Thank you!'
Hope that helps.