I had the same issue when I put my camper on.
The adjustment screw is the one you see when the hood is up, on top of the headlight next to the grille.(most likely the one you saw) It is the opposite of a torx(looks like a star), and takes a socket E15 or E20 (guessing size,not sure which)I was able to use a 4mm socket and turned them about a turn and a half clockwise to get them lowered some. If at all possible, do this parked level and a few feet away from a wall with lights on so you can see if they are level with each other.