Carol Stream's housing stock runs newer than a lot of the towns we cover - the typical home here went up around 1984, which puts most garages well past the era of odd, one-off hardware. A torsion spring swap on a door from this vintage is usually a same-visit job: pull the old springs off the header, size the new ones to the door weight and track, wind them to the right turns, test the balance. We're coming from Wheaton, about 5 miles away, so the drive isn't the variable - the door is. Where it runs long is when a spring has been broken for a while and the opener's been forcing the door up on the motor alone, which can chew up the drive gear or strip the trolley. If that's happened, the visit turns into two repairs instead of one, and we'll tell you that before we start, not after.