agitator

I have tried to remove the plastic part that is on top of the dogs, but i can’t seem to get it to come out. i have also tried to remove the clothes mover, but can’t get it to come off the agitator either. Is there a trick, or does it just take brute force?

thank you,

Phil2012

Have you watched the video?
http://www.youtube.com/watch?feature=player_embedded&v=ZvstxY_nH9k