East Missoula is a small place - about 962 households, not thousands - so the cable failures we see here tend to cluster around the same handful of door styles instead of spanning every era of construction. A door that won't lift square, one side dropping lower than the other while the opener keeps straining, usually means a cable has slipped off the drum or frayed through at the bottom bracket. Sometimes you'll hear it before you see it: a snap, then the door sagging crooked in the opening. Other times it's quieter - a cable that's unwound a few loops and is riding loose, which still counts as a failure waiting to happen, not a minor issue to put off. We come out from Missoula, about 4 miles in, to look at the drums, the bottom brackets, and the spring that's usually connected to the same problem.