-64 A body manual steering box

I agree with Matto. I was curious where your play was at? In checking my steering boxes, mostly used but one new Direct connection box, all were tight with no play when centered, but all had some play at the extreme left or right positions where holding the output shaft fixed the input would rock back and forth. I presumed this was normal because even the new box had this condition. Point is if that's where your play is it may be much harder to fix.