I just fixed mine a few minutes ago. The inside of the agitator was stripped. I took an old hose and cut a strip off and put it in the inside of the agitator. I then had to get the agitator back on the shaft which was a b-i-t-c-h. I pushed it down a few inches then actually stood on it and got it about 85% down but the bolt would not catch the threads. I thought about a longer bolt but there was too much room between the bottom of the washer and the bottom of the agitator. I would assume clothes would get stuck under there. So, I took a dumbbell bar and pounded it into the top of the agitator with a hammer until it got close enough for the bolt to catch the threads in the shaft. I then ratcheted it into position. Sure, I knocked a few corners off the teeth of the agitator base in the process, but I'm washing a load right now and it's working like a champ!
Just make sure the piece of rubber you put in there is large enough for the requisite pressure to hold it in place.
Mike M
January 2009