It's concieveable that the stress caused by the front guiderail gap could damage the regulator. I'm guessing that windows in this case get gradually slower and the owner doesn't notice till too late. It wouldn't HAVE to bind or come out of the track to damage the reg. I think the front track fix is the real answer. I'm not sure I agree with bending the bottom of the track forward. The binding occurs around the middle of the front rail from the lower to the middle part of the door. Notice how the front angled glass isn't making much contactwith the guiderail until it's almost all the way up. The main center regulator rail is not centered on the window and door. It's too far back, if I recall. This and the front rail bind causes the back of the window to lead on the way up and causes the front to lag. Once the curvature of the rear of the glass and rear guiderail go out of alignment enough, the window binds or comes out of track, or breaks off a glued on mount stud. On mine, I just took a close fitting pair of channel locks with INSULATED HANDLES and used the end of one handle to pry the front track open wider. Use the free handle to twist the track open wider. I left the rubber in the rail and went up the rail from the bottom to as far up as I could reach, in 1/2 inch increments. Moving the bottom of the front rail forward just allows that part of the window to be close to OUT of the track because it's not that deep to begin with.
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