or is that the complete line on this family of words?

As I was hinting in my earlier post, it's possible there has been etymylogical confusion over the years between the two L roots of adjuxtare (to put side by side) from which we get adjust, and justus (right). Howsowhomwhichever, the common thread between the printing jargon and the more normal usage is clearly to do with adjustment or making right.