9 years ago the garage door man said, "now if you will use this, you will never have to call me to fix your doors!" I did it and I have never had to have him come.
Came in a timely fashion, despite not being in stock. Put them up myself, saved over 300 bucks. (Installer wanted 400) I didn't like the website trying to make me get winding rods, for extra cost. I already have some.