no not the jokes around here, your yokes.
I always wanted to write this but I found a picture Cj had posted in his tech article about breaking loose yoke nuts and decided to just go for it
here is the pic
here is the article
https://www.jeep-cj.com/community/resources/easy-way-to-remove-a-yoke-nut.7/
so, if you run early Cjs you know of the really small U Joints we have and often times find they can be hard to source.
and if you are going do any diff work, then it can be time to swap...