Build-year wear pattern
The reason shows up in the build date. Auburn's housing stock centers on 1992, which puts it a few years ahead of the 2001 median we see across the wider service area. That gap matters because torsion springs have a working life measured in cycles, not years, and a spring installed when a house went up in the early 90s has had roughly a decade more open-and-close cycles than one in a house built after 2000.
