I do direct business with them. The ProPlec material is highly proprietary. It is not available in sheets. It is made for them in this very specific...
I would guess the effect would be negligable and impossible to reproduce and related only to the mass the material adds to the instrument. I suspect...
I always expect to be impressed with Gail's work, and, once again, she doesn't disappoint. So glad to have her post again. You're going to love that...