Try Shibata Sensei in Berkeley.Check out Birankai North America.You will get a list of dojos which might be useful to you. Nice classes inn Ventura, Burbank etc. If you get as far as San Diego check out San Diego Aikikai .Also Murashige Sensei , hes in San Diego. Have a good time, Cheers, Joe.
I just checked the Berkeley Aikikai and then UnEnKai - it seems Marianne Shibata is running things in Berkeley, with no mention of Ichiro Shibata Sensei. Is he retired from teaching now?