I have an 18 ft door with two springs. Whne one broke I had a company come out and repalce both springs. He also replaces some worn hinges. Ever since the door catches and makes cracking noises when going up or down. I measured the new springs and one is 36" and the other is 33". Did he put in incorrect springs which have the door in a bind?
Shouldn't they be the same length when measured in the door closed position?