NWS is a dedicated channel and not run through the cortex. I've not tried reducing the gyro gain back to zero, but can the next time it happens. The issue is random...just begins right after powering up. Could go 20 power cycles with no issues and then all the sudden it'll occur. Just curious, have you been able to run EX Bus to the GS200? Found it odd that both controllers responded the same way in that configuration.