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How to Repair Bifold Door Top Roller Guide If your bifold doors are squeaking, they probably require some maintenance. They may require cleaning and lubricated or adjusted. The issue could be caused by loose screws on the top pivot or by the top guide roller. This kit includes all the hardware you need to restore your bi-fold wardrobe door system to its peak performance. Remove the Door It may appear complicated and difficult to set up an internal set of bifold doors however for those who are DIYers