My first impression on reading this was that there must be a piece of
swarf or something between the saddle and the apron. Is the apron
and saddle original to the bed? I have repaired a set of half nuts
per the artical in HSM a while ago and I had no problem with
alignment. Where did the new half nuts come from?
--- In firstname.lastname@example.org, James Sterner
Are the new nuts a matched pair, with the same numbers on bothhalves? If there was a mix up that might do it too. The nuts are
bored & threaded then split apart later.
Jimso I guessed 0.075. Yes I agree that is 75/1000 of an inch.