Arrived on, 08/22/23- Joe/Jakob - on unit, removed control-side side panel. Found chain and sprocket off of shaft. Found set screw in poor condition. Was able to mount on shaft temporarily. Costumer would like new sprocket ordered. Semi-operational. Returned on, 08/25/23- Joe/Jakob - on unit, de-energized unit and removed necessary panels. Removed old sprocket and replaced with new. Unit fully operational