changing the midi channel of my vci

does anybody know how to set a vci-100 to send midi out signals on a channel other than channel 1. im currently using the 1.3/1.2 firmware running traktor3.4. when mapping the tks file, i try to set it to channel 2 but it seems to automatically change back to channel 1. i want to set up my vci and my total control to control all 4 decks in traktor, but realized that they cant send messages on the same midi channel. Or does anyone maybe know how to change the midi out channel on the total control? thanks for any help in advance.. this forum is the cats pajamas