To give an idea of the job if you want to do it yourself or if a pro do it for you.
it's just to give an idea i'm not a pro.
Only special tool needed is a spring compressor.
This job must be done with the hands and the brain.
There is a very big tension on the spring once compressed.
Compression must be equally distributed on the two compressors and they must be positionned in a symetrical way .