My sliding glass doors haven’t slid in years! We had to pick them up and manhandle them just to go outside. I called Sliding Glass Door Medics and they were here the next morning. In spite of the terrible condition of my doors, they were able to fix them and now they work perfectly! We couldn’t be happier with them. The price was quite reasonable, too, easily 1⁄10 what it would have cost to replace them