I'm having a bit of difficulty setting the WT cities on a G-7700. It seems that it is set on NYC and LON now and I would like to change them. When I click the "mode" button to get into World Time (WT) mode, I click "adjust", but this only toggles on and off the daylight savings time mode (DST). Does anyone know how I can adjust these cities? I purchase the watch in Japan and the instructions I received are in Japanese.