Ron, this is what I did to make mine very quite.
1. Something between the limbs. felt, DAS limb pads, cut up folder or greating card.
2. Change from factory string. I used a D97 or a TS-1 flemished string with rubber type cat whiskers. Wool works great wrapped around the string where it hit the limb also.
3. Set the brace height at the top end of what's recommended.
4. Put a 5" "Limb Saver rubber stabalizer and limb savers on.
5. I shot 10gr per pound, 540gr arrow.
You also get a ring from the hollow spots in the riser. The rubber stab really helped with that. Bass pro sells a kit with limb savers, stab, and string leaches.
This is what worked for me when I had mine. Hope this helps in some way.