One of my sliding glass doors has become really difficult to open - it does not glide smoothly, despite the track being clean. Based on the rumbling noise when it rolls along, it is obviously time to replace the rollers. The current rollers are maybe 13 years old, and the track is 20 years old.
From some web pages I've looked at, it is futile to replace the rollers if the track is worn down. Has anyone tried a rail topper to fix the track, for example:
Jean