ARCHIVED FORUM -- March 2012 to February 2022READ ONLY FORUM
This is the second Archived Forum which was active between 1st March 2012 and 23rd February 2022
Hi,
First thing first: clean and lubricate the rails.Clean with alcohol, lubricate with silicone.
If it dont fix it, may be loose belt (easy fix on the forum) or door misalignment (fix on the forum too but need complete dismantling).
Hope this helps?