The part, 446228, does not fit. Serial number of machine is C80823345. When I ordered it the picture of the part on your site matched my broken part but what arrived is totally different. The hole in the shaft is smaller. Is the correct part not available for my machine? There was a review from a customer stating the new part was better because it only has one set screw, the original had 2 which was causing the original part to fail by cracking, exactly what happened to mine. Thank you, Steve Natur

