my windows keep coming off track and i was wondering why? could it be doing this because of the cold weather? they didnt start coming off track until it started getting cold out. i put them back on track and then after awhile the come right off. whats going on?

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1996 Honda Civic Ex
-17 Image Tuner
-Yokohama 205/40/17
-Tanabe Racing Medalion
-Skunk2 coil-overs