I took the door glass out of the Mustang the other day.  The good news is that it came out.  The bad news is that my neighbors could have mistaken me for a sailor with the “choice phrases” I had for the car.  There were a couple of bolts that were so heavily rusted that no amount of WD-40 and an impact wrench could break free.  I ended up having to drill several bolts completely, and found the reason my rear glass windows don’t roll up and down:

That steel track on the bottom of the window SHOULD be straight.  There is a wheel that is supposed to sit in that track which guides the window up and down when it’s cranked.  However, if it’s not properly set, the wheel can jump out of that track due to hyper extention, and then cause all sorts of poblems, like the issue I now have.  The solution is to remove that track from the window frame and replace it.  No big deal, just a little bit of time and effort.

The main windows have their own unique set of issues:

On the upside, the FoMoCo stamps on the metal all look good!