Have you tried camera method for future reference?
Basically in the olden days, when I were a lad, and a lens were a treasure possession, we always did this:-
When screwing two parts together, to avoid the disaster of cross-threads, the idea was to place the two parts together, but before tightening up, a little bit of gentle lefty-loosey until could hear threads locate, then tighten.
i do this with everything, and soon becomes a good habit, whatever you are doing...
