Discontinued hardware specifications
Original hardware from that period doesn't match what's stocked on the shelf now, and if the roller size or the rail profile is a discontinued spec, we're either sourcing an older part or replacing more of the system than the original problem called for. We're honest about that limitation upfront: if your track is proprietary to a door nobody makes anymore, patching it is a stopgap, not a fix, and we'll say so rather than sell you a repair we don't believe in.
