I believe your wrong there!
Per Horizons Web site: Use these between the o-ring and step washers on each side of the center hub to stiffen the dampening of the rotor blades. Stiffer dampening usually results in quicker cyclic response and less stability.
And thats always the way I heard it, soft dampening = sluggish response (what mine has) hard dampening quicker response (what I want!)