JFB -
I can't specifically comment on your question, except to say that as I recall, all of the gears are "located" on the shaft via a series of snap rings or retained split washers (#211/212).
These retainers are close to the gear centerline.
The Syncrobody (216) and sliding sleeve are close to the gear, but on the outside of the cone (not where the welds would be).
I hope my description is clear...
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