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Bifold Door Repair - How to Fix a Sticky Bifold Door If your bifold doors are stuck instead of smoothly opening and close, the problem is usually fixable by following a few simple steps. Here's how. The addition of carpet or a flooring material change frequently can cause bifold closet doors scratch the floor. The bottom pivot adjustment can be used to raise the door. It is important to keep the hardware in good condition by cleaning it free of dirt, dust and other debris.