When using AttitudeControl with the combined switch channel, make sure AttitudeControl is deactivated at least once before takeoff. Otherwise the tail gyro gain would be minimal, as the system would not have been able to determine your tail gain setting after initialization.
Also note that in this mode it is absolutely necessary to use a switch that changes the control direction directly and without intermediate steps. In particular, do not use a slider on the transmitter! Otherwise, when you activate AttitudeControl, the tail gyro sensitivity would be reduced to 0% before the system turns AttitudeControl on - so you would have 0% tail gyro gain while AttitudeControl is active.
