Hi I'm John I will help you with the agitator problem.
The part that holds the agitator on the transmission is the beige part under the agitator remove the bolt that holds it down and replace that bell it will fix the problem.
if you require more assistance let me know please.
The bell is number 310 the agitator just sits on that part , remove the bolt number 301 and tap the bell upwards till it comes off you can spray w d 40 it will lift up easier.
Its not part of the agitator its a separate part.
This is the bell and a video on how to replace the bell.