Last summer I replaced the springs on my Coplay door (its 20+ years old) that has no other tracking or binding issues. One of the original springs snapped. When I tightened the springs the left one, facing out, wound up just fine. The right one twisted up on itself, but only for 1/3 the length of the spring, and stayed that way even after I relaxed it and tried to re-torque it. Nope, same result. Before I tightened them, I made sure I had stretched the spring out per the instructions, tightened the end bolt, torqured it. I thought maybe I had stretched the RH spring too much. Got another spring from Menards, same spec. Installed it, stretched it, torqued it. No issues. Been fine since. I still think the spring was more the issue than the way I installed it. Sent a claim to Coplay, with the explanation, pictures, got nothing back.