N/M........I found it for myself........DOH!!!

 

I had a resonance in my kick and deadened it by using non-hardening Modeling Clay (local craft shop). It will not even harden in the oven. It came in 1lb packages in multiple colours (Van Aken brand). The one pound package measured 1"X3"X4" and I used one package per kick. It's too bad I'm making another set of kicks. The packages were $5 each.

 

How much fibre fill should I put in each kick?

How will I know if I have put to little or too much?