Most opener jobs in Stanford are gear, capacitor, or logic board swaps, and those take under an hour once we're in the garage. What adds time is diagnosis on units this old - a 1977-adjacent house may have had its opener replaced once or twice since, so we're not always looking at the same generation of hardware door to door. We check the drive gear, the capacitor, the travel limits, and the safety reversal system before we touch anything, because on houses of this age the safety sensors were often added later as a retrofit kit, not built in from day one, and that retrofit isn't always wired correctly.