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How to Repair Bifold Door Top Roller Guide If your bifold doors have become stuck to the wall, they might require some maintenance. They may need to be cleaned or lubricated, or even adjusted. The problem may be caused by loose screws on the top pivot or the top guide roller. This kit comes with all the hardware required to bring your bi-fold closet door system to its optimal performance. Remove the Door It may appear complicated and challenging to put in the bifold internal doors, but for DIYer