Sliding gates often fail to open or close because debris blocks the track, wheels slip off the rail

https://donovanjqcf109.trexgame.net/keeping-a-residential-gate-reliable-year-round-with-preventive-maintenance

Sliding gates often fail to open or close because debris blocks the track, wheels slip off the rail, tracks shift out of line, or the operator needs a reset after an obstruction is cleared.