I’m off to France a week today.
A couple of months back I had the same conversation regarding headlight adjustment with Andrew, the service manager at Stockport. I’ve spoken to him a few times now and he seems an all-round nice chap!
He said that the M3 headlights need no adjustment for driving on the right. The beam is designed to be flat, and so the dipped beam works fine here and abroad.
He did suggest that I might want to put a small piece of black tape on each headlight, purely because they’d had reports of over-zealous gendarmes stopping a Model 3 and not accepting that the unadjusted beams are ok
So I’m taking my roll of black insulating tape with me to apply to the headlights once we’re there.