Dispatch iv sliding door

[mark 1]

Hi guys, having problems closing one of my sliding doors. It's very sticky on the runners and rear of door doesn't want to engage( you have to push the rear hard to engage). Tried blowing everything out and lubing but think its past that. Any tips for what to replace/ check?

[mickthemaverick]

It may be the bottom rollers are worn causing the door to have dropped at the rear. As a test lay a thin piece of plastic under the door and see if it helps.