Answer: Reduce the “Up Limit” by turning the adjustment screw clockwise until eventually the door opens just enough to allow your vehicle to go without the need of hitting the bolt or straining the opener. Power or electrical problems: Inconsistent electricity or opener motor challenges can interrupt the closing cycle. https://download-free-software-2060408.suomiblog.com/about-old-garage-door-opener-model-travel-limit-set-up-53958407