Headlamp adjust

[Domatron]

Well today I changed the h4s in both headlamps and not sure what I've knocked but now the light beams are not level. The passenger side points much lower and the drivers side too high. No the bulbs aren't up the wrong way, they only fit one way.
Any idea how to adjust them?
Thanks

[Seabart]

You sure the bulbs are in right because it's not easy to adjust both lights by just "knocking" something. Although the blublbs can be a complete pain in the backside to change.

The obvious thing to do was go to a garage and have them adjusted using their official equipment.

Next thing is to borrow a car from which the lights are at the right level, park it at a few meters from a wall, use chalk to mark the beams at that wall. Then park the BRM at the same distance from the wall & adjust lights to get them on the set marks.

Hope it helps!