The failure pattern here traces straight back to 1959. A door that age predates any opener built with federal auto-reverse or photo-eye safety sensors - that requirement didn't exist until 1993, decades after these garages were framed. So when a Richfield opener finally quits, it's often one installed sometime after that law, meaning the unit itself is newer than the house but the track, drum, and header hardware around it are not. That mismatch is what causes a lot of the grinding and misalignment calls we get: a modern opener pulling against an old, slightly out-of-square rail mount that was never meant to carry that load pattern. Add the cold-climate swings this area sees, and wood framing around these openings has had sixty-plus years to dry, shrink, and move a fraction from square. None of that shows up until you put a new motor on it and the chain starts binding on one side.