To hear a chorusing effect, obviously you will want the Mix somewhere around 50%, I would also recommend the LPG gate fully open as well when testing for the modulation.
Also, as stated before, the 3208 is not a direct replacement for the 3207.
Just wondering, what are the "all required components" that come with the extra price tag? I understand there is the breadboards themselves, but does that include also switches, jacks, power supplies, etc?
cheers