I adjusted mine today to lift them a bit, following the US thread where they reference you need to adjust both 'wheels' (2 per side) to the same amount of turns. I've no idea what the second one does as I've matched it but the dipped beam didn't move at all. You need a long thin shaft

philips to get to the back one.
So yeah, only the 'accessible' wheels seemed to do anything to the level, but who knows. Maybe it's a high beam thing but i thought that just lifts it a set amount from low beam.
Hopefully I can improve the
naff all visibility on dipped beam as we head into the darker months