This is a cold-band severe climate, and a house built any time from 1952 through 2003 - which covers most of what's on the ground across the 54 named areas we work in - was framed before today's thermal break and insulation standards existed for garage openings. That combination is why installation here isn't the same job as installation in a warmer, newer-stock market: the opening itself has to be corrected for square and insulated for temperature swing, not just fitted with a new door.
We won't install a door on an opening that's badly out of square without addressing the framing first. Doing otherwise just moves the seal failure from this winter to next winter, and that's not a job we're willing to hand a customer knowing it'll fail.