How To Install A Garage Door Spring
https://juliuscjyx891.mozello.com/blog/params/post/2444298/garage-door-springs-not-holding-door-open-expectation
Garagedoorpartsusa.com and stardoorparts.com are two online sources . First, inspect the condition of your cables and brackets. If you see any frayed strands on the cables or rust on the bottom brackets, replace