[bpape]

I can get you the cotton. It's not cheap but I can get you just a couple pcs if you want. PM me.

As for diffusion behind your surrounds, personally, I don't think that's what you need. Diffusing the reflections of a surround speaker is one thing and can be useful. In your case, you don't havre a lot of room behind them and I personally think the wall/corner proximity bass issues will be more of a problem.

Bryan