Google search legend star. They have a list of overseas balls under the Ebonite umbrella. E-maiul them, make sure you use Google translate to put it in Japanese or Chinese. But also send it in English.
I got a response within 2 days about a ball I asked a year or so ago. Very friendly people too
I'm in the process of trying to find out where I fit in the bowling world. I do not know my tech specs of my game, but it's all a learning process.