Deck should be set to 23.976 for a 23.976 project and 24 for a 24p project. I am assuming you are in an HD project on the Symphony. Playback should not have jitter during playback when adding 2:3 pulldown on the output.
With settings active in project window, go to FILE and select new Setting file. A small window will appear. Drag the settings you want to that window. Once saved (as a .avs file), that file can be opened on all other systems and any or all dragged back to the settings on those systems.