The Yokes have flat sides that a person could use a Depth Micrometer or less accurately a Vernier Caliper to Center the Bearings.
The issue is if during staking you puch them in further or they creep out if yo do not punch the in tight enough.

In my case I got the Caps centered but gestimated the spacing of the Caps.
So far I have had no issues; but I am not a high milage driver.

__________________
84 300D, 82 Volvo 244Gl Diesel