Why don't you measure the o.d of the parts you think are worn and compare?
The only part that could be worn is the section where the bearing sits,if there's no bearing running on any part of the machined stub then there's no way that can be worn so measure it in a few places with a vernier.
That will confirm if it's worn or not.
I'd doubt both hubs are worn the same or all 4 hubs,that would be near impossible so I'd guess either the bearings should be loose on the hubs or they are made wrong,doubtful though.
When I did my 2wd bearings I had to press everything together and those bearings were quintin hazel as supplied by ggr.
Wouldn't be putting them together with loctite either,wasn't in there from New and won't last.