Two things drive most of the panel calls we get from South River. First is age - steel panels from the late 1950s and 1960s weren't galvanized the way modern stock is, and this region sits in a cold, severe climate band where repeated freeze-thaw cycles work rust through seams faster than in milder areas. Second is impact, plain and simple: a trailer, a bike, a car mirror catching a bottom panel. On a newer door that's a quick swap. On a door built when Eisenhower was in office, the panel we need may not be made anymore in that profile, and we have to talk through whether we're matching what's there or replacing the whole section run to get a clean fit.