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Before making any adjustments to the garage door opener, first check the manual operation of the garage door itself. Pull the emergency release cord, which typically has a red handle, to disconnect the garage door from the opener's track. Once disconnected, manually move the garage door up and down. Observe if it moves smoothly without excessive resistance or sticking. Also, test the door's balance by stopping it midway through its travel; a properly balanced door should remain in place without falling or rising on its own. If the door moves smoothly and stays put when manually operated, the issue likely lies with the opener, not the door's mechanical components or springs.