well, the gamble on the SPREE carb kit didn't pay off.
so after digging around HERE: http://www.cmsnl.com/honda-ncz50b-mo...slist/E07.html
and cross-referencing some numbers, the carb is the same as the old Express 50 scooters. Ironically, I had one.
The carb gasket kit required is honda # 16010GF8305
I have two on order from an Ebay Seller.