ok, i just installed my aftermarket black housings i got from procarparts. when i went to turn on my lights, my right side beam is facing up! the left side is fine. so i checked to see how can i adjust it, and haven't got the slightest clue. on the back of the housings, there is this little turning thing, but when i tried to turn it, it's real stiff, and now it's dark and raining so i can't make no more hypothesis, so anybody know how to adjust headlights?