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How to Repair Bifold Door Top Roller Guide If your bifold doors are squeaking to the wall, they might require a little attention. It is possible that you need to clean or lubricate them, or even adjust them. The problem could be caused by an unfastened bolt on the top pivot, or by the top guide roller. This kit includes all the hardware needed to bring your bi-fold closet door system to its best performance. Remove the Door It may seem complicated and difficult to set up the bifold internal doors however for those who are DIYers with some experience