You have probably already fixed this by now but I want to say the glass goes in front of the regulator. I would look at the spot that the window is supposed to bolt to and see which one has the threaded part for the screw to screw into, if that makes sense.

Our passenger side is broke yet again and I haven't fixed it because I hate fixing it to break again. Where did you get yours and how did you get a lifetime warranty with it?

Glad to see you back also. I really hate coming here and not seeing anybody when I do because this was once one of my favorite places to come!!