The 1964 median build date is the reason, not coincidence. A door and its hardware installed in the mid-1960s has had sixty years to work loose, get painted over, or get a replacement opener bolted on without touching the track behind it. Winters in this climate band run cold and severe, and on an older single-car door with thinner original wood panels and less weatherstripping, that cold works springs and cables harder over the years than it would on a newer insulated steel door. Elmhurst's roughly 16,863 households sit on the higher end for household income in this service area, at a median near $145,374, which tends to mean more owners who've already put money into an opener upgrade or a cosmetic panel swap without replacing the spring system underneath it. That's a common pattern: a nice-looking door on hardware nobody's touched since the Johnson administration.