I am having trouble calibrating my AOA. I have a GSU73 and GSU25. I have configured the G3X with the AOA to use the GSU25. I have tried to calibrate on several flights and the system accepts the minimun visible and the caution alert. When performing the stall warning it appears to accept it after the power off stall but then says it does not calibrate. Attached are screen shots. Any help will be appreciated.