[Myron Piatek]

What the heck! I'm going to take a shot at this.
It's been shown to me that a stiffer rebound will hit the tire harder. At least it helped 60's for me!

Imagine you are doing a bench press. As you push up, the bar lifts off of the supports and pushes you down, to an extent. (Soft rebound that "gives".) The energy is disapated up and down.

Now imagine doing a bench press with the bar secured to the supports. You push up, trying to lift it, but it doesn't "give". (Stiffer rebound.) The harder you push, the more energy is directed down, pushing you (rear end & tires) down harder into the bench (track).

But everything from the engine, to converter, to gears to shocks and springs has to be "tuned" to work together for optimum results.

Maybe leaf springs and coil spring suspensions react a little differently?

I hope that's a good analogy. It's been a rough week already!