doors are becoming too heavy for the spring. the more you lift the door with a weak spring, the more your door will begin to shift and become unbalanced. this is one of the main reasons it is important to have regular routine maintenance performed on your garage door. it will help by making sure that once the spring begins to loosen, they can be repaired. this will help keep the door from becoming unbalanced.
now as for the cables, they may not wear out but they can become lose. once they loosen this can cause them to get spun up around other parts of your door. when this occurs, it 