reading through the atsg maybe i had a gas od unit? it says gas has 5 frictions, a flat no stepped backing plate, and a wavy snap ring which i have all that.
Maybe the hub was damaged last time it was apart. Dropped on the floor or something. Youd know if it was rubbing aluminum everywhere rough in the case and polished looking hard parts.
I think my case was like that.
If there isn't corresponding damage I would suspect someone reused It after failure.Also thought this was weird on the planetary, i dont see anything in the case that would touch this