Dan,
in step 5--where exactly did the 3 mounting screws come from because I looked on a diagram photo of the drive shaft and could not see where the screws are located? And, where exactly did you place the mounted screws to connect the SQ and WH agitators?
For step 6--I don't understand where you drilled the hole in the SQ agitator, where and how did you connect or attached the metal thread to the 2 agitators.
BTW, you don't have to use the bottom part of the fabric softener, just the upper area that look like a flying saucer.