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How to Repair Bifold Door Top Roller Guide If your bifold doors are sticking and squeaking, they may require a little attention. You may need to clean or lubricate them, or even adjust them. The problem could be caused by an unfastened bolt on the top pivot or by the top guide roller. This kit comes with all the hardware required to restore your bi-fold closet door system to its best performance. Take the door off It may seem complicated and difficult to set up the bifold intern