This isn't a generic garage door problem. It's a function of three things stacking on top of each other here: an older housing stock, a climate that doesn't let you get away with a cheap seal, and a service area big enough that the same failure shows up over and over.
Spokane Valley sits in a cold-severe climate band, and a door built in the 60s or 70s was never engineered with a thermal break or a tight bottom seal in mind - it was engineered to be a door. Pair that with a median build year around 1978 across roughly 21,258 households and about 10,366 owner-occupied houses in the service area, and you get a huge number of garages losing heat through a door that was fine for its decade but isn't built for how people use garages now, as workshops, storage, or half-finished living space. The fix isn't a tune-up. It's a door built for the house's current winter, not the one it shipped with.