If it's very minor, I'd try removing the headlight that's in question (or both) and use some thin washers or hold them to the right/left while tightening the mounting bolts... I was able to adjust mine a few degrees that way. Not much, but enough if the rotation is off only a little bit.

If it's WAY off, you might want to think about taking it apart...

 

Ive adjusted it as far as it will allow me..Im planing to take them apart anyway in the furture and instaling LED rings as well as cleanign up the lenses. and Ill just aim them with teh univerisal adapter

 

Those bulbs are over a year old, they have faded too. So you should consider getting a replacement soon for full brightness. TommyP knows more about the life of these bulbs, if I remember correctly they're fully bright for like a year or something like that then fade.

 

Ya mine are way to low after seeing these pics

 

I finally fixed mine. Look way better!

 

My Light does seem to be a bit dim...Im thinking about hoppin on this HIDwerks Group buy thing and getting some 6K Bulbs.