The climate here runs on the moderate end of the heat band, not the extreme swings you'd get further south or in a drier climate zone. That's good news for the door itself - less thermal cycling means less stress on a steel panel over the decades. But moderate heat, sustained for thirty-plus years, still works on rubber seals, lubricant in the springs, and the nylon rollers original to a 1987 install. Rollers dry out and crack, seals lose their seal, and springs lose a percentage of their tension every year they sit under load in the heat.
The other factor is simply age of the opener motor. A chain-drive unit from the late 80s or early 90s wasn't built with the sensors or auto-reverse safety features required in openers made after 1993. If your opener predates that, it's not a compliance issue we can fix with a repair - it's a sign the whole unit is due for replacement, not a patch.