Cold, moderate climate - the kind Westville sits in - is hard on old grease and hard on nylon. Steel rollers from a 1954 build don't care much about temperature swings; they just wear mechanically, slow and steady, for decades. But once a homeowner has already had one roller replaced with a cheap nylon part somewhere along the way, that nylon roller is the one that gets brittle and cracks first in a hard cold snap, while the original steel rollers next to it keep grinding along fine.
That mismatch - one or two newer nylon rollers mixed in with a set of original steel ones - is the single most common thing we find on service calls out here. It's not a Westville-specific defect, it's what happens to a $52,809-median-income area with mostly pre-1960 housing stock: repairs happen one roller at a time, when something finally breaks, not as a planned full-set job. Coming from Danville, seven miles out, we see this pattern often enough to recognize it before the door's even open.