Worn out rollers can cause major damage to the track preventing free sliding of the door. When the wheels underneath the door collapse, the sliding panel begins rubbing on the track causing wear and tear. Video
Once the track has bumps and grooves it will need to be repaired for the rollers to slide correctly. A corroded rib can be fixed quite inexpensively.
We use high-quality parts such as stainless steel tracks and rollers with sealed precision ball bearings to make sure that your slider works like new.