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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. You may need to clean and lubricate them or adjust them. The problem may be caused by a loose screw 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 to its optimal performance. Take the door off Installing an interior set of bifold doors may seem like a complex and difficult task, but it's actually quite straightforward for a DIYer with a bi