Independence sits about 6 miles from Florence, and its houses skew noticeably newer than the rest of the area we cover. The median build year here is 1999, a good fifteen years past the 1984 median across the broader service territory. That gap matters more than it sounds like it should.
Houses built in the late 1990s almost all shipped with factory steel doors on galvanized lift cables and torsion springs mounted on a single center shaft - not the older extension-spring, side-mounted setups common in the 1960s and 70s stock elsewhere. The cable itself is thinner gauge, run through a cable drum instead of a pulley, and it's usually fine for a long stretch before it isn't. When it fails here, it's almost always fatigue at the drum groove or corrosion creeping in where the cable meets the bottom bracket, not the stretched-out, frayed extension cable you'd find on an older door.