Given the housing stock, the calls we get most from Avocado Heights are torsion spring replacement on single-car garages, roller and cable swaps on tracks that have never been touched since the house was built, and opener replacements where the original chain-drive unit has outlived its gears. We don't do full structural framing work if a door opening has settled or shifted out of square - that's a job for a contractor, and we'll say so rather than force a door into an opening it doesn't fit anymore. For most of what we see here, though, it's a matter of matching original spring sizing or drum configuration, which is routine for us once we're looking at the door in person.