I know that if I want to build an extremely high quality American joystick (such as the MAS) then I should get the parts from a company like HAL. But what if I want to build my own high quality Japanese joystick (square guide, short stick w/ a ball on the end, relatively loose, perfect "snap-back-to-center", etc.)? From whom would I have to purchase the stick and possibly some buttons? Also, can someone explain the difference between "American" buttons and "Japanese" buttons? Is it that one is concave and the other convex or what? What are the advantages/disadvantages to each? I'm not sure that there is much difference. If I build a stick I might just order buttons from HAL to reduce shipping and handling charges but I really want a Japanese stick. Almost 2/3rds of the world uses that style stick--who am I to disagree?