Change PWM AUX time when Pixhawk is fully disarmed?

Hi all, I have a tiltrotor VTOL that can only take off vertically, otherwise the props hit the ground. With the way the tilt mechanism servo is set up, when the Pixhawk turns on, it flips the tilt mechanism to the horizontal position and buries my props in the grass. Changing the PWM_AUX_DISARMED does not make any difference, even though the servo is definitely on channel AUX1. What am I missing here?

Edit - actually changing the PWM_AUX_DISARMED parameter did work–I had to change it in the airframe config file though, just changing it in QGC didn’t seem to do anything.