Here's another perspective and why I don't think this ring goes on the sun gear shaft...this is how things sit sans ring.
View attachment 630761
With the ring in the closest to transmission point the sun gear is an 1/8" out of the annulus.
With the ring in that middle position it's an inch out of the annulus.
I don't think the ring belongs here.
-Mac
I think this is a problem relating to mixing and matching early and late parts in the front case half. The snap ring has to go in that slot closest to the transmission. It definitely can’t go in the slot by the shoulder, because the bearing butts up against that.
This picture perfectly shows why the ring goes where it goes.

If putting the ring in the correct spot has the planetaries not riding in the annulus, then it’s likely a case depth problem caused by the mixing and matching of late parts in the early case.
