The 42 doesn't need one....it's built in.But the crush sleeve eliminator is for a 489 pinion only, so don’t try it on a 472!
Not sure about him but.....Your drinking aren't you?? lol
Good idea but all I've ever done was just throw the nut back on to where it feels the same as before but use a dab of red Loc-tite.....I know I've posted this before: I add a .010" shim to the front end of the crush sleeve and just crush it a little more. I can tell the correct preload by "feel" as I have done these for 50 years.
Mike