My wife seems to have used the windows too much again since I won't fix the sun roof. The 85 500 sel rear left window seems to be free to move up and down without the help of the motor. The motor runs but the window won't except when done by hand friction. Do I needed to replace the regulator or is their a repair kit to fix stripped gears? I hope to have parts on hand before I get everything torn apart.
Thanks

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freddie