Bill I know it is a longshot, but I was thinking ........ you say he/she is a well known seller, heretofore thought to be trustworthy. I suspect few know these materials as well as you do, yet until you cut into the horn you were fooled, thinking they were solid, as advertised. Isn't it possible that the seller was also fooled, and that if you contact them with the evidence/photos, they might refund your $ ?