This part is specific to Saginaw's climate and housing, not garage doors in general. F3 puts this area in a severe cold band, and cable steel contracts in deep cold the same way most metal does - a cable that's already got a little rust or fraying handles that contraction worse and is more likely to snap on a hard winter morning than a mild fall afternoon. Add to that the housing stock: most of the 21 named areas we cover run 1960s-70s construction, median 1970, and a lot of those original torsion setups have never had the cable, drum, or bottom bracket touched since the house was built. Fifty-plus years of cycling on the same cable, through decades of Michigan winters, is exactly the setup that produces fraying at the drum. Newer builds in the same area don't see this nearly as often, because the hardware hasn't had five decades to fatigue. If your house falls in that older band, the cable job is often not a one-off - it's the first sign the rest of the torsion hardware is due.