I got my mouthpiece this evening. Thank you for the fabulous work. I can tell the difference as I blew it for the first few seconds. It indeed intends to have a Dukoff’s sound, which is also the Mr. G type sound. I am using a Hemke 2 and I can make a similar sound like the Kenny G’s earlier stage live sound. As far as the low notes, I can tell the difference: the low C feels more powerful and solid than before. I only played it for around one hour today and I think I need to spend weeks to fully explore it.