Isn't it just a case of relative diameters
you could have a slimline gentleman paired with a "well practiced" receiver, no danger of an interference fit there
(dribble, Fri 5 Feb 2021, 19:20, archived)

https://b3ta.com/talk/8292426
( Turing's Artificial Hand Sig Sauer, Fri 5 Feb 2021, 20:36, archived)

Insert shaft D into hole A then tighten nuts, grease may help with the insertion.

(dribble, Fri 5 Feb 2021, 21:45, archived)