For those who have the Activa Dose 2 what settings are you using for tdcs? I see on the device where it says Dose: mA x min, Time: min: sec, and Current: mA. I am thinking that the Current needs to be set at 2mA and the time to 20 minutes but what does the Dose: mA x min need to be set at? Would it be 40.0 mA since I am doing 2mA for 20 minutes?