yeah, i know that extension springs are replaced when the door is open and under barely any load. I would never do torsion springs. Time is a factor in this decision as well. This is also a "test" of how the service of this company is as I will probably want to use them for a garage door when I blow this garage away and make it a 2 car (hopefully in a year).
Just wanted to see if it was a reasonable quote to start.
Thanks,
Scott