hi there, my GE wsm2700wcwww Washer won't agitate properly and I can't figure out which part to get. It had started squeaking loudly. when i removed the the agitator cap and the bolt i could see some cracks on what appears to be a metal ring inside the plastic agitator part. the pictures are attached. the metal seems to be attached to the plastic so i'm wondering if i'm looking at a cracked drive hub which is what i need to replace or is this just an attached part of the whole agitator which now has to be replaced. If it is a separate part, how do i detach it? Thanks for any and all help.