I called for a repair appointment on my drive into work. There was a confirmation email in my In-box when I got to work 20 minutes later for a same-day repair. The repair was done fairly quickly with the proper springs rated for the weight of the door. The previous springs were too small. I didn't notice but he must have also adjusted the settings for the opener and lubricated the wheels because the opening and closing of the door is quieter than it has ever been.
– David Boase