We start by identifying the door's brand and panel run from the label inside the track, then match the section for width, hinge pattern, and insulation type before we order anything. On a door from a build era like Stonegate's, that's usually straightforward since the hardware is standard and not yet obsolete.
Once the panel's on hand, the swap itself involves unbolting the damaged section from its neighbors, transferring the hinges and rollers, and rehanging it without disturbing the spring tension on the rest of the door. We check the track alignment after, since a bent panel sometimes means the rollers were dragging before the section ever cracked.