Join Date: Apr 2010
Location: Brantford Ontario
Go drive to a commercial plaza at night, and park outside of the glass store front on level ground.
The reflection coming back at you will tell the tale, in regards to glaring headlights. Works for the vertical adjustment, and can make both sides quite level/even if you are careful with the adjustment(s). Sometimes parking a bit farther out in the lot can give you more of a sense of what the oncoming drivers are seeing.
Your problem could also be that your drivers side horizontal setting is incorrect, so try to take note of how your lights look on a misty/foggy night, or smoke up your garage slightly at night via something, and check then.
Now before doing any of this, I recommend that you check your tire pressures, and have your truck half full of gas (better than empty or full re: the over all average of the way your truck would be sitting)
I can't believe that most dealerships and garages don't seem to no longer have proper headlight aiming equipment available, or when they do, don't know how to use them correctly.
Press on regardless!