Anoka sits in a severe cold climate band, and that matters more for a door this old than people expect. A door built in the early 1970s wasn't engineered with the insulation or weatherstripping standards that came later, so the steel panels flex more in a hard freeze-thaw cycle. Repeated flexing is what cracks old seams and pops rivets that have already been rusting for decades. A newer door shrugs off that cycling; a 1973 panel usually doesn't.
There's also a volume problem. Anoka has around 7,422 households, which is a fraction of the housing stock across the wider area this company covers out of Elk River. That means original hardware from this exact build era doesn't come up as often as it does in some of the larger, older pockets nearby - so a tech needs to actually confirm panel dimensions and hinge spacing on site before ordering anything, rather than assuming a standard size will fit. Guessing on a door this old wastes a trip and a part.