To help your sliding door open more smoothly, use a toothbrush or wire brush to clean the inside of the sliding track, then use a vacuum to clean out all the dirt and grime accumulated over the years. After the track is clean, use WD-40 to lubricate the sliding track.
We had a rental that took water damage due to a roof leak. Arteco was able to get in there next day and replace the drywall, insulation plus paint within 5 hours, this should have been a 1.5 day job....
Highly recommend. Customer services was phenomenal, work was expedited, and quality was exceptional. Cannot recommend enough. I'll be using this company again!