We run the 18 miles out from Everett with a stocked truck, so the visit covers diagnosis and repair in one trip whenever the part is one we carry. On a 1991-era opener, that's most often a drive gear kit, a new capacitor, or a replacement wall control - standard parts for a standard-era unit. What it doesn't take is guesswork: we test the logic board, the safety sensors, and the drive mechanism separately before touching anything, because a bad sensor connection can look exactly like a dying motor. Here's the honest limit - if the opener needs a specific control board that's long out of production, we may not have it on the truck, and ordering it can add a few days before we're back out to finish the job. We'll tell you that up front rather than make a second trip look like a quick fix.