I had already thrown the blender in the trash and went online to look for a replacement. I came across Appliance Parts Pros who have a video on how to remove the part and who had one in stock. Removing the drive coupler took me about 10-15 attempts with a hammer and a screwdriver, but it eventually came off. The extra questions and answers in Appliance Parts Pros helped a lot to show what to do when the part would not come off. In the end I ended up spending only $11.00 (part plus shipping), instead of $80-$100 for a new blender.