You might think that the issue is due to the engine of your opener or due to the cables that pull up the door, but the issue can be the springs. What we do to replace sources. We discover that the prime problem is usually with the springs when technicians at Elite Garage Doors assess issues like this. We follow industry best practices to ensure your repair is safe and successful in replacing springs. For that reason. We replace both springs, since when an arc goes, the other may likely follow. We use springs which are right for the door, based on length, inside diameter, and the wire size.