We replaced the seal and two bearings by watching the youtube video provided by Appliance Parts Pros. It was a terrific video. It took us 4 hours but it was well worth it. The issues would be we needed a tool, the bearings were tough to get off, and the front door gasket was tough to get on.
It saved us $1300 by purchasing these parts for just $80! It works! I worry because I can't hear it running:)