You didn't touch the bulbs did you? That will cause them to burn out... For bulbs I would actually recommend HELLA brand bulbs. I recently put in a set of Silverstars and I am very impressed. That is one of the few things I have luck with: bulbs, unlike tires and transmissions, =D.
As for adjusting it isn't illegal to adjust them, just make sure that you are not blinding oncoming traffic.
If you can, you can also bias the horizontal angle towards the road shoulder, and raise the lights a bit. This may allow some more room for adjustment.
2006.5 Optima(MG) EX V6 Black
"Manager's Special" Demo edition. 15% Tint
Speedlock activated (7 mph the doors lock, unlock in park)
'G6A5' μ (Mu) 2.7L 24v DOHC V6 - CVVT/VIRLS. (190+HP)
'A5GF1' 5 speed Semi-Automatic Transaxle.