Quote Originally Posted by Bulldoggie

The tabs are too far forward on the glass IF it TILTS down in front when going up.
This picture is the window unbolted from the arm, but pushed back into the rear guide where it belongs.
repositioning the tabs will fix the window tilt ONLY.
If your window tabs were broken or your window wants to "pinch" or push itself out of the rubber, you will still need to shim the arm assembly to be UNDER the glass.
I believe this is the problem that most are having with their windows, right? The front edge drops or hangs, causing the glass to rotate slightly counterclockwise as it's going up?

Do you think it would it be easier to grind out the hole on the rail, as you have, or pull the whole window and replace the tabs? Have you had any problems since you made the modification or do your windows work perfectly now?

Is there any play in how the rail itself mounts? Could the entire rail be slid forward rather than pulling the window back?