A door that's jumped track in Oatfield usually shows itself the same way: one side of the door hangs lower than the other, or it stops cold a few inches up with a grinding noise instead of the usual smooth roll. On the 1970s-era doors common here, the culprit is often a roller that's finally given out after decades in a mild, occasionally-freezing climate - condensation and the odd cold snap corrode rollers and hinges slowly, year after year, until one gives. Sometimes it's a cable that's walked off its drum rather than the track itself; the door looks off-track but the real problem is upstream. On houses built in the 1960s and 70s, which make up most of the stock in this corner of the area, the track brackets are also original more often than not - thinner steel, older fasteners, and a lower tolerance for a door that's been forced back onto its track by hand. If someone's already tried to muscle the door back into the opening before calling, tell us - that's useful information, not something to hide.