This area sits in a cold climate band with severe winter conditions, and that shapes the repair list more than the town names do. Torsion springs lose temper faster in sustained cold, and we see more snapped springs and seized rollers in the winter months than any other single complaint, regardless of whether the call comes from Zeeland or Fennville. Steel tracks that aren't quite plumb will bind worse once the ground frosts and shifts the slab under the jamb, which is a common issue on houses from the 1960s and 70s that make up most of this stock.
On the older end of the range - houses pushing toward that 1943 start date - we still run into doors on hardware that was never updated past the original one-piece or early sectional setup, and finding matching parts for those takes longer than a standard repair. That's the honest limitation: if your door or opener predates the 1978 median by a couple decades and nobody's touched it since, we may need to order a part rather than fix it off the truck, and replacement sometimes makes more sense than chasing parts for something that old.