auto pilot ev 200

I am still am having trouble with my autopilot as described in Sept 2015t technical support forum. If I am trolling and have a port or starboard rudder on, when engaging the auto pilot it will automatically return to neutral rudder and then try and steer to the required setting. When this happens, the boat is usually unable to compensate ant the alarm sounds/

I am trying to have this resolved while still under warranty and hope there are some new ideas.