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How to Repair Bifold Door Top Roller Guide If your bifold door is sticking, it's likely that they require some maintenance. They could need to be cleaned or lubricated, or even adjusted. The issue could be caused by a loose bolt on the top pivot, or by the top guide roller. This kit comes with all the hardware needed to bring your bi-fold closet door to its optimal performance. Remove the Door It may appear complicated and difficult to install the bifold internal doors, but for th