My GMG DB auger got noisier when it was wearing on the bushing. I pulled auger and cleaned the auger tube and sanded any burs off of the auger shaft were it rides on bushing. Also lined the auger up when installing it. It was tilted downwards some. Just added thin spacer. Could be dust build up in tube making it harder to turn. Hope it is just the fan clicking or creosote in end of auger tube.
Mudflap