GR Signature Series - Chase Sanborn 66S Gold Plated Trumpet Mouthpiece

Description

GR Signature Chase Sanborn 66S Gold Plated Trumpet Mouthpiece
This mouthpiece is relatively new and only had some minor insertion marks and NO dents or dings. Sells for 9 plus shipping on Chase's website. This is a one owner mouthpiece.
I purchased it because I was looking for something different. I  play the GR 66 series of mouthpieces (M, MS & S) and The Chase Sanborn series was suggested to me. I tried it and found that it just doesn't work for me. I tend to bottom out rather quickly as compared to my GR 66S mouthpiece that I play regularly.
CS Signature Mouthpieces are designed and manufactured by GR Mouthpiece Technologies. GR is Gary Radtke, who is well known to the worldwide trumpet community as one of the world's most knowledgable and talented mouthpiece makers. GR's revolutionary design and manufacturing process defines every aspect of the inner and outer contours as a set of very precise mathematical parameters. While the science behind the art is beyond most people's comprehension, when you play a GR mouthpiece and discover how well it responds, it's reassuring to appreciate the high degree of precision engineering that produced it.
What are the differences between CS models and GR models?
The following was posted by GR in answer to a question in a trumpet forum. Most of us don't understand the math like he does, but this gives you some insight into the parameters that are taken into account.
"Designing the Chase Sanborn line involved a progression using GR’s Three Rules of Brass Playing and the Mouthpiece Design Program. Listening to Chase Sanborn play everything from soft breath attacks to high notes, scales, intervals and small jazz combo, the goal was to help Chase to sound like Chase with less work, and to increase versatility."
There are 7 rim parameters that were used to tune the GR66 rim into the CS66 rim:
Outside Diameter: .004” difference
Highpoint: .002” difference
Inside diameter: 0” difference
Bite: .004” difference on radius
Rc: 0” difference
Ro: .010” on the radius.
The CS66S alpha is 1 degree higher than GR66S.
The CS66MS is 2 degrees higher than the GR 66MS.
The CS66M alpha is 1 degree less than the GR 66M.
The GR Design Program and the parameters are the key to getting a design match to the player and horn. Small changes make big differences. These changes are what Chase needs to set up the soundwave quickest according to the GR Three Rules."
More information can be obtained at https://www.chasesanborn.com/product-page/copy-of-gr-cs-signature-mouthpieces-gold-plated