Most houses in South Elgin went up around 1996, which puts this town squarely in the second wave of subdivision building here - well past the older 1956-1960s stock closer to Elgin's core, but not new construction either. That build year matters because it tells us what's on the door. By the mid-90s, builders had standardized on torsion springs mounted on a single shaft above the door, replacing the older side-mounted extension setups you'd find on houses from the 1960s. Those torsion springs have a service life measured in cycles, not years, and a door opened twice a day for close to thirty years is well past due.
We also see a fair number of these doors still running the original spring - nobody replaced it because it never fully failed, it just got weaker. That shows up as an opener straining, a door that won't stay up when you release it by hand, or a bang from the shaft when the spring finally lets go. The fix isn't universal across town; the exact wire size and wind depends on the door weight and the drum setup that shipped with the house, not on a generic size chart.