upper agitator quit working

I remove the retaining bolt from the agitator - a little force need to separate the top agitator from the bottom - removed the dogs from the old part - did not have to even use the replacement tower - put it back on and the washer works like new. I had been already pricing a new washer ( $500)- this site is great - instructions were clear. I am an accountant so, I am not a guy that normally works with equipment. some of the user's repair stories made it easy