A customer complained that the ice dispenser does not work properly. The ice bin is full of ice. The door dispenser switch works and the auger makes loud churning noises but no ice comes through the dispenser shoot in freezer door, the flapper does open. I checked the auger motor and it turns as it should without any slipping when I hold onto the auger fork. I checked that the Ice bin is fully seated so that the auger engages the motor. Still, only one cube of ice falls out of the shoot. I replaced the auger assembly thinking something is wrong with it. Same thing happening with the new auger assembly installed. Any clues why ice is not dropping out as it should be?