Reply to Output Routing for Omni control

Hi every one i got my numark omni control and am haveing this problem with the output routing am useing traktor LE for some reason i cant get it right in dek A sound comes out great from main speackers but in dek B sound comes out onley from my headphones i mean is my output routing is right if not please help me out haveing hard time here,

my output routing is ,

External

out channel A , left (mono) : 1ut 0- numark usb audio
right :2ut 1-numark usb audio

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out channel B , left (mono) : 3ut 2-numark usb audio
right : 4ut 3-numark usb audio
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