I have a standard rollup garage door. Not the sectional type that has become really heavy to open. The door is branded Krazi door and it came with the house. It is not automated. The door I estimate is more than 20 years old. Could these springs be tensioned again to make the door easier to open? It is a mystery to find replacement springs for these anywhere and I even contacted the manufacturer who pointed me to someone else who has no idea what I am talking about as they only make custom doors. I have contacted multiple people who quoted me +- R2000 to replace the springs only this door. This really sounds like a ripoff as I have seen a complete aluzinc door similar to my one advertised around R2000 obviously without installation. I cannot find any place in JHB that has these springs. I was quoted R550 for a set from Tiley doors but they are in Durban. Any advice where I can find these springs in Gauteng or recommendation for someone who can replace them at a reasonable price.