Join the club. I live in Tokyo Japan and the Racy factory has halted production of the lower and upper chassis plates. So I tried Race Factory in Australia, and guess what, they have none left (I made an order)...And they will not be getting any in, because as I know they are out of production.
Chris of Race Factory claims that this happened earlier with the TG10 parts and Racy started production after a similar halt, replacing the old parts with some different upgrade bits.
Let's wait, I am waiting on my order from Race Factory and can get in contact with Racy here in Japan whenever I want.
These parts are unsourceable anywhere in Japan or Australia. May be a few of them habging around on shelves in Guanghuajie in Mongkok, HK but who knows.
Best of luck with those parts...