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How to Repair Bifold Door Top Roller Guide If your bifold doors are sticking it's likely they need some attention. They could need to be cleaned, lubricated or adjusted. The problem may be caused by an unfastened screw on the top pivot or by the top roller guide. This kit comes with all the hardware needed to restore your bi-fold closet door system to its optimal performance. Remove the Door Installing a set of internal bifold doors might seem like an involved and difficult task however, it's actually