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How to Repair Bifold Door Top Roller Guide If your bifold door is squeaking then it's likely that they need some maintenance. It is possible that you need to clean or lubricate them, or even adjust them. The issue could be caused by an unfastened screw on the top pivot or the top guide roller. This kit contains everything you need to restore your bi-fold wardrobe door to its peak performance. Take the door off It may seem complicated and difficult to install the bifold internal