I wonder if the issue could be head bearings
Both my 1190R, Giles's 1190R and Milkmaid's 1190R had loose bearings from new (I think, also, Cookie's IIRC?).
When I rode Giles's new 1290S back in May I returned it to him asking if he had noticed the clunk, clunk, clunk every time one braked?
Guess what, his head bearings were loose.
So, If the factory are sending the bikes out with incorrectly set head bearings here and there maybe that explains the odd bit of wibble, wobble here and there. Maybe
Andres