How It Shows Up
Most of Versailles went up around 1979, later than a lot of the surrounding area, which means steel sectional doors on extension springs were standard rather than the older wood panel doors on side-mounted track you see in older pockets nearby. Extension-spring track is lighter-gauge than what went into torsion-spring setups from the same decade, and the rollers sit in a narrower channel. That channel doesn't forgive much. A door that's been running slightly bent track for months will suddenly jump the rail on a cold morning when the steel contracts and the tolerance disappears. You'll usually see it as a door that looks crooked in the opening, a gap at one bottom corner, or a cable that's gone slack on one side while the other stays taut. Sometimes the door still closes but scrapes the track loud enough to hear from the kitchen - that's usually a roller that's partway out, not all the way, and it's worth a call before it finishes the job itself.
What Can Go Wrong
The track itself is thin sheet metal, and once it's bent even slightly, straightening it rarely holds for good - it's often cheaper and more reliable to replace the section than to muscle it back into shape. On the extension-spring setups common in Versailles's 1979-era stock, a cable that jumps its drum under tension can whip hard enough to dent the door skin or crack a glass panel if the door has one. Winter is the real pressure point here: this region sits in a severe-cold climate band, and steel contracts enough overnight that a door riding close to the edge of its track tolerance in October can be jumping rail by January. We've also seen off-track calls where the actual cause wasn't the track at all - a broken spring let one side of the door drop faster than the other, and the rollers came out trying to keep up. Fixing the track without finding that root cause just buys you a repeat call.
Doing It Yourself
If a roller has only partly left the track and the door is still sitting roughly square in the opening, you can sometimes walk it back onto the rail by hand with the opener disconnected - pull the release cord first, always. What you should not do is force a door that's hanging unevenly, because on extension-spring doors the cable under uneven tension can snap toward you, not away. If the door dropped suddenly and unevenly rather than just scraping the track, that's a spring problem wearing an off-track costume, and it's not a DIY fix - those springs hold enough stored force to break a hand. Given that Versailles is a drive for us, it's worth doing the five-minute check yourself first: look at both rails for a visible bend, check whether both cables have equal slack, and note whether the opener was still trying to run the door when it jumped. That information is more useful to us on the phone than a guess at parts.
