Model 90 plus... Everything else works fine, but the agitation will only work if I push down and hold it. I've seen that I can get parts for the agitator and I will give that a shot if someone can tell me how to get the thing apart. I removed the top cover and there looks to be a plastic part with about a half inch drive slot on top. I don't want to break anything, so I'm asking here first! Do I put my half inch drive extension on that and remove it?