O.K. I'll show my "newbieness". When I do the genetic outcomes of a Pin x Pewter mating... I don't see any outcome called a Pinstripe Pewter :
12.5% 1/8 Normal
12.5% 1/8 Pinstripe
12.5% 1/8 Pastel
12.5% 1/8 Lemon Blast
12.5% 1/8 Cinnamon
12.5% 1/8 Cinnamon Pinstripe
12.5% 1/8 Pewter
12.5% 1/8 Pewter Blast

Not doubting you, I'm interested in knowing what it is... because I'll be in that same boat next year. By the way... VERY COOL clutch ! The Cinny-Pins are spectacular.