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How to Repair Bifold Door Top Roller Guide If your bifold doors are sticking, they probably require a little attention. You may need to clean or lubricate them, or even adjust them. The problem may be caused by a loose screw on the top pivot or the top guide roller. This kit includes all the hardware you require to restore your bi-fold wardrobe door to its optimal performance. Remove the Door It may seem complicated and difficult to set up an internal set of bifold doors however f