The oven door on our Viking had settled far enough out of true that you could feel heat spilling past the top edge, and anything roasted longer than an hour came out cooked on one side. Tired hinge springs, apparently, not the seal I had been blaming. He replaced them, reset the door, then had me crouch down and sight along the gap myself before and after. Our bungalow off Olde Town is not exactly square either, so I appreciated being shown rather than told.
MasterChef ovens
Generation 7000 and earlier wall ovens lean hard on their PT1000 temperature sensor, door hinges, and M Touch panel. Uneven bakes, MasterChef programs that stall, and PerfectClean liners that no longer release usually trace to a sensor, a hinge spring, or a tired control board rather than the element itself.
