I have a GE washer with selfcleaning filter. I washed a carpet with rubberbacking and it all came off. The water will not drain now. I know the filter is under the agitator. I don't know how to get the agitator off to clean it manually. I have pulled the fabric softener container on the agitator off but I can't see what to do next . The agitator has 2 parts to it.The model # is GJSR2080T5WW.