Agitator is not turning

Agitator came off easily, but the agitator coupling was a little bit hard to remove. I have to yank it hard to be able to remove it. Putting the new part in is a bit hard too. I had to use a hammer to put it in. (with a piece of wood in between). Tried it with a small load and We're back in business. It was a pleasant experience to do business with you guys. Thanks for the quick turnaround.