Most garage doors in New Cumberland are hanging on houses built around 1953. That's the era of steel rollers running in steel track with no nylon bushing anywhere in the system - the roller stem rides metal-on-metal, and after enough winters the stem wears an oval groove into itself. You hear it before you see it: a grinding or popping sound as the door travels, worse at the top and bottom of the run where the curve in the track asks the most of a worn roller.
New Cumberland sits about 3 miles from Harrisburg, close enough that the service area's cold climate band applies here the same as anywhere else in the region - hard freezes, repeated freeze-thaw, road salt tracked into the garage on tires. Salt and moisture work on exposed steel rollers in a way that doesn't show up on a door until the roller seizes or the stem snaps clean. On a house with original 1953 hardware, you're not dealing with a roller that's a few years old - you're dealing with one that's outlived several owners.
The other local number worth noting: about 3,448 households are in this immediate area, with median income near $81,947, which tends to mean older homes get maintained rather than gutted and rebuilt. That's good for the house, but it means original track and roller hardware often stays in service long past when it should have been swapped.