Re-arcing mopar SS leaf springs?

I have a set of SS springs that I de arched at home about 15 years ago that are still on my 66 Valiant. The ride height has not changed since they where redone. I made a support between 2 trees and bent the springs opposite of there arch with a hydraulic pump jack. There is a 1:1 ratio of arch to ride height, so measure the arch before attempting and keep measuring as you progress. I remember actually bending the springs past being straight before I got where I wanted them to be set, they will spring back after jack is released.

This can be EXTREMELY DANGEROUS make certain of the
setup and go VERY SLOWLY!