I am attempting to replace the tub seal on the GE Spacemaker Washer/Dryer combo (Model #GTUP270EM1WW). I have removed the tub assembly from the cabinet, removed the tub nut (had to break it off with hammer and chisel). Now I'm attempting to remove the inner tub. The washer hub (part #318 on the diagram) is different from what is shown on the diagram. It is circular and has "teeth" all the way around the outside. It will not slide off or turn. I've sprayed Blaster on it, tapped on it, pulled on it etc and its not budging. Any assistance you can provide to get this off so that I can get to the seal is much appreciated.