Cold mornings are the usual trigger out here - the climate's a moderate cold band, not the deep-freeze stretches you get further north, but a sharp overnight drop still stiffens up torsion springs and grease on doors that haven't been serviced in years. On a house from the late 80s or 90s, that often means a spring that was already near the end of its cycle count finally gives out on the first genuinely cold snap of the season. Tracks pull out of alignment too, usually from a door that's been hit or from rollers that went brittle and let the panel ride crooked. The one thing we won't do is recommend a repair on a door that's better off replaced - if the springs, track, and opener are all failing at once on a door that old, patching one part just moves the next failure a few weeks down the road.