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4. Adjust the Rollers Most sliding doors have screws located at the bottom of the door, often accessed through small holes. Use the appropriate screwdriver to turn these screws. Turning the screws clockwise typically raises the door, while counterclockwise lowers it. Make small adjustments and test the door after each adjustment until it glides smoothly along the track.

Ideally, relatively known manufacturers tend to be costlier than less known companies.