OkinawaPeichin
Yellow Belt
Many of the Old Sensei on Okinawa and Japan, are very strict about how their style is taught/passed on. If they do not ok something they will expell people even long time students. It happens from time to time.
I trained in Okinawa for many years and never noticed them to be that strict.
Kanazawa added several Shito ryu,and Goju ryu kata to his Shotokan curriculum, as well as going to Okinawa and studying some Uechi ryu and Taichi and this was shunned by the JKA. I believe that he left on his own accord and started the SKI.
From what I have heard from my present teacher and seen with my own eyes anything ticks the JKA off. Basic policy states you are not allowed to train in other systems or styles, even kobudo.
I wonder what Funakoshi Osensei's teachers thought of his changing all of the kata that he taught on the Japanese mainland?
From what I have read in various books they weren’t too happy.