Sad part is my shop manual is at my shop NOT here. I was trying to get this figured out so I could have it later Wednesday instead of setting this project back a day or two.
I've probably put at least 6 - 8 of these together (it's been a few years, LOL) and all I did was use the cluster shaft for an arbor, and assembled the needles with grease, then pulled the shaft out "carefully" and stuck it together. I only remember once having to "redo" the needles