Re: imbalanced diamond vision
The head lamps should never look the same from the same eye point level. The left head lamp aims a little to the left and it is slightly higher. The right head lamp aims straight forward and a little lower to provide immediate illumination infront of the driver. You can adjust these headings yourself but i recommend that most cars can be left as is. After an accident though or removal of the headlamp asemblies, the alignment may run. Especially so if there is a head lamp replacement. (New headlamp assemblies are not adjusted in any way).
to align your head lamps you will need a torx screwdriver, a piece of vanguard sheet and a very dark flat space. While you cover 1 head light, adjust the other for direction and elevation. Repeat for the other side. Mostly i would recommend that you just leave it alone.
Cheers