I think I figured it out.
Once I took the little black ring off (not sure if they came split, or if I or someone else broke it), it looks like they may have a special tool to turn it. in the picture you can see little "ratchet" holes. I was able to turn it with some pliers and a little tenderness.
To Toasted: I was thinking that it might have been done that way intentionally, but on this one it looks, to me anyway, like the passenger side was pointing straight out, and the driver side one was moved all the way over to meet it. When I am driving at night, the driver side is over too far for me to see the lines separating the lanes. I didn't move it much so I don't accidentally blind people coming at me. Hopefully I don't get anyone flashing their lights at me.
To Stitch: I looked there first, but I swear I couldn't find it.