Coming from a drywall hanger- Do NOT *F* with torsion springs. Just did a garage job laminating firecode over original layer. The door didn't have 2x6" pads for the rails and spring so it got interesting making the door open right. GC kept fretting and tinkering trying to make the door seal to the floor when it didn't seal right before we got there! He loosened the spring brackets and nearly put the thing thru the rock. This was with both rod ends still tight, damn thing tried to spin with half an inch of room! The torque on those things is incredible. If you don't know exactly what you're doing save yourself a hand,or a face, and call the door guys!