You might not think about them much, but cables and tracks do the heavy lifting so you don't have to wrestle with an unwieldy door every morning. When they wear out or break, you'll notice right away because suddenly that once noble doorway is more of a drawbridge stuck in the mud.A safety recall report suggests most folks forget about these parts until there's trouble brewing. Don’t wait for warning signs like strange noises or jerky movements; those could be cries for help from strained cables or off-track rollers.