A problem with the spring tension could cause the door to open or close unevenly improperly or at the wrong speed and adjusting the springs will likely solve the problem.
Sieting garage door.
However a single garage door at eight to nine feet wide and seven to eight feet high is a common measurement for many homes.
Frame the rough opening to a height that is 1 5 taller than the door that you have selected.
If the door is 7 tall frame the opening 7 1 5.
If you are installing a 9 wide door the opening will be 9 3 wide.
Garage door springs offset the weight of the door and allow it to open and close with ease.