Last year my passenger would not close all the way, the window was crooked in the slot so when it rolled up the there was a 1/4 inch open space on the front part of the window. I had took the door apart and found that the plastic guide clips had come off from the "L" shaped metal guide rail inside. I put the clips back around the guide rail and everything was fine until today. Rolled window down, then up and it was off the track again... Just a few weeks ago my drivers window started making a loud clicking sound when it reached what seemed to be the fully closed position. On closer inspection today I see that it is not rolling up completely with a space at the front, although a much smaller space than the passenger side. Are these symptoms of the worm rail coming out from the worm guide tube? Would buying the improved regualtor units fix this or does it seem like I have a different problem? thanks for any info. Adam 16683