Very simple repair, just pulled off the agitator (using a loop of string, found this trick on a youtube video)- this was actually the hardest part of the repair, you really need to yank up on it pretty hard. Then you just unscrew the nut, slide off the old part, slide on the new one, and reattach the nut. Finally, slide the agitator back on (be careful to line up the grooves with those on the coupler), and press down to snap it back into place (this is much easier than getting it off!). Done- works like a charm now.