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Bi Fold Door Repair - How to Fix Leaning Doors Without Removing the Hinges Bi-fold doors are elegant and practical way to connect your indoor and outdoor areas. Like all doors, they should be maintained correctly to function correctly. It is possible to do this by cleaning and lubricating the mechanisms, including your lock, so that they operate smoothly. This will prevent problems that could cause them to break or become out of alignment. Fix a Leaning Door If your door is