OK, I found a small screw that moves a lever which shifts the little lens holding thing (not the moving laser assembly, inside the middle of that under a metal cover) left and right. The lens thing also moves (bounces almost) up and down, but only if I nudge it with a screwdriver, there is no up/down control I can see.
The lens is not perfectly clear either, the middle is darker than the outside, does this indicate damage?