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How to Repair Bifold Door Top Roller Guide If your bifold doors are squeaking, they probably need a little maintenance. You may need to clean or lubricate them, or even adjust them. The issue could be caused by loose bolts on the top pivot, or by the top guide roller. This kit contains everything you need to restore your bi-fold wardrobe door to its optimal performance. Remove the Door It might seem difficult and challenging to put in an internal set of bifold doors