Jurupa Valley's housing stock centers on 1980, right in the middle of the wider service area's 1938-2007 range, and that median year matters more than people think. A torsion spring is rated for a number of open-close cycles, not years, but heat cycling wears them out faster, and this area sits in a moderate heat band that pushes garages into the 90s and higher for stretches of the season. Combine a 44-year-old spring with regular summer heat swings and you get metal fatigue that shows up as a sudden snap, usually on the coldest morning after a hot week - the temperature swing does the damage, not the cold itself. On original doors, we also find the cable drums and end bearing plates are the factory parts too, since spring failure is often the first thing that forces anyone to open up the hardware. If the drum or bearing is pitted, we say so before we quote, because swapping just the spring and leaving worn bearings in place is a repeat call waiting to happen.