The factory owner's manual talks about the headlights being aimed at the factory and the settings marked/scribed on the adjusting wheels, so it's easier to reset. I looked at my car and can see the gear wheel thing under the hood, but how do I know what the factory marks are? Also I do not see a bubble indicator like in the manual. Is it behind the headlight somewhere so it has to be removed?

My lights are aimed too high. I bought the car used around 3 months ago.