I have been busy with family commitments over the past number of days, also lost some enthusiasm. My replacement GSA28 servo arrived today from " Complete Avionics " in Coolangatta, Queensland. They have been very supportive and Garmin were good enough to replace my defective servo. I connected the new servo to the roll axis and everything appears to be working correctly. I have green ticks on the configuration page and the correct indications on the G3X PFD AFCS ( Automatic Flight Control System ) Status Box, in all modes.