My thinking here is a power Adder car has enough horsepower to separate the spring Beyond its neutral position down track on a motor car we lack down track horsepower which means the leaf spring is actually trying to pull the tire back up off the track.. this is just a theory for instance I have five and a half inches of shock travel and a leaf spring that only suspends two and a half inches from ride height.. so the car on separation actually is beginning to fight the leaf spring after two and a half inches I think ideally when I'm looking for is for the same right height and a leaf spring that will suspend five or six inches that way all of the action will be controlled by shock adjustment not the added variable of the spring