Great video! I laughed so hard when I saw that stuff hit the floor, but I could relate and feel your pain. That stuff always happens to me, but I would have to do some heavy editing to blip out the cuss words when it happens to me!
I wouldn't install both tracks at the start. One installed at the start is better since you need to keep certain clearances on the side per instructions.
One thing I have noticed in every garage door installation video I have watched. No one shows how the tracks location/positioned is determined Vertical and Horizontal.
I know this video is several years old but my son is looking for a similar type door for the workshop he is building. He does not want one with an opener. The horizontal spring design looks like a good alternative. What brand /model door is that?
Yes, I too would like to see how you install the door on the rail in detail and your cable on the spring because your camera is out of frame or too far away. it lacks detail and precision. Its important to have the detail so that we see and understand.
