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How to Repair Bifold Door Top Roller Guide If your bifold doors are sticking, they probably require a little attention. They may require cleaning and lubricated or adjusted. The problem could be caused by an unfastened bolt at the top pivot or by the top guide roller. This kit contains 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 install the bifold internal doors but f