Early on I had the window problem with the glass coming off the track (binding on the track). I stupidly kept using the window and one day, "CRUNCH,"
I broke the plastic tab off the window. Mechanic told me there was no way to glue the tab back to the glass. They replaced my window, placed shims in the track and replaced the regulator under warranty. I use a silicone spray regularly now with no problems since.