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How to Repair Bifold Door Top Roller Guide If your bifold door is squeaking it's likely they need some maintenance. You may need to clean or lubricate them, or even adjust them. The problem may be caused by an unfastened screw on the top pivot or the top roller guide. This kit contains all the hardware required to restore your bi-fold closet door system to its optimal performance. Take the door off It may seem complicated and difficult to set up