What "both" are you talking about? high vs low beam?

 

yes, in the text the word “both” are explained in brackets. Both beams = (high beam and low beam)

 

The only way to adjust the aim of the high beam is by adjusting the bulb separately from the low beam is by rotating the bulb in the housing in the hope that it somewhere aligns with the projection code in a more pleasing fashion. Every make and model of appropriate bulb is slightly different. The "moves both" adjustment screw is adjusting the position of the "low beam" shutter in it's closed/low position and that should be below the eyeline of oncoming drivers.

Nobody likes this system, but it's what we've got.

 

The only way to adjust the aim of the high beam is by adjusting the bulb separately from the low beam is by rotating the bulb in the housing in the hope that it somewhere aligns with the projection code in a more pleasing fashion.

Nobody likes this system, but it's what we've got.

Got it, I will try it.
But what the second screw is for?
I mean this one:

it just does nothing.

 

No idea. I only know that moving the bulb moves the focus point, and the screw that does something is adjusting the shutter position, not the bulb. As far as I know, there ISN'T a way to adjust the entire projector aim. Which is why your recourse is to rotate the bulb until it's as close to what you want as you get and call it job done.

 

Thank you @hellsop one small thing just to clarify, when you are saying rotation you mean the rotation of the whole bulb assembly? or the inside component of the bulb? thee the photo:

which one should I try?

 

I'd recheck carefully how the high beam bulb is seated in the housing. If it isn't seated flat, it can aim incorrectly like that.

-Charlie