Oak Grove sits in a cold-moderate climate band with real winter swings, and steel doors built in the mid-80s don't insulate the way a current door does - most from that era are single-layer steel with no vapor barrier, so the panel itself flexes more in a hard freeze than a newer double-wall door would. That flex is what fatigues an old spring faster than the manufacturer's rated cycle count would suggest. With roughly 3,085 households in Oak Grove and a median income of $73,237, a lot of these houses were bought once and held - which means the original opener and spring, now forty years old, are often still the ones on the door, never swapped when a homeowner sold and moved on. That's the pattern we see on this side of the route more than anywhere else: not storm damage, not a new install gone wrong, just original 1984 hardware finally running out of turns.