Drexel Heights sits in the same severe-heat band as the rest of the Tucson service area, and heat is hard on lift cable in a specific way: the galvanized coating on older cable breaks down faster with repeated thermal cycling, so strands fray from the inside before you see it from the outside. On a door pushing close to forty years old, that shows up as a scraping or popping sound right before the cable lets go, usually on the side that gets more direct sun through the day.
Watch for a door that runs crooked - one side visibly lower than the other as it travels - or a cable with visible kinks near the bottom bracket. Either one means the cable is close to done, not starting to wear. On a house from the 1986 era, if one cable has already frayed, the other is on the same clock. Replacing both at once, rather than one now and one in six months, is usually the better use of a single service call.