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Direct Answer: A garage door lift cable frays when continuous friction, improper drum alignment, rust, or unbalanced spring tension causes the braided steel strands to rub against brackets or jump drum grooves. Frayed cables are under extreme tension and can snap suddenly, dropping the heavy door and causing catastrophic property damage or severe injury. SAFETY

Direct Answer: A garage door scraping against an arched exterior opening is typically caused by shifted vertical track alignment, seasonal expansion of custom decorative overlays, settling masonry headers, or worn track rollers. Because sectional doors move vertically behind a curved opening, even minor millimeter track misalignments cause panel surfaces and decorative trim to rub against

Even a low-speed vehicle bump can bend vertical tracks, misalign safety sensors, or warp lower panel hinges. If your garage door shudders, sticks midway, squeaks loudly, or displays uneven gaps along the frame, the track geometry or structural panels are likely compromised and need immediate certified inspection. SAFETY WARNING: Never attempt to hammer out bent

Direct Answer: Multi-bay garage doors operate on completely independent mechanical systems, meaning each door experiences unique daily cycle counts, spring tension loss, and motor strain. Uneven opening speeds, unlevel door resting positions, or varied wear patterns typically indicate uneven spring fatigue, differing opener force limits, worn rollers, or isolated track misalignments between bays. SAFETY WARNING:

  Direct Answer: An automatic sliding driveway gate typically stops halfway or reverses unexpectedly due to misaligned safety photo-eyes, physical obstructions or dirt along the ground track, worn guide rollers, or miscalibrated operator force limits. When the motor encounters mechanical resistance or broken safety beams, it reverses travel immediately as an anti-entrapment safety precaution. SAFETY