Put the three facts together and the failure pattern makes sense. DeKalb's housing largely dates to 1959 through 2009 with a median build year around 1976, so a meaningful share of doors in town are running original or first-generation replacement hardware. That hardware was never rated for forty-plus years of severe winter cycling. Pair that with DeKalb's cold band, and you get steel springs and tracks that tighten, lubricant that thickens, and tolerances that were fine in 1976 running tight today.
This isn't a problem you fix once. A door built for a 1970s-era household doesn't get a cold-weather upgrade just because the opener was swapped out at some point. The spring, the track gauge, and the drum are usually still original unless someone replaced the whole system. Across DeKalb and the surrounding area - with its roughly 21,309 owner-occupied houses sharing a lot of that same build era - the failure isn't random. It's the predictable result of decades-old steel meeting a winter it wasn't speced for.