Reply to Back to back with a Serato DJ

Hi,

I had a gig last evening DJing with a friend and towards the end of the evening we decided to go back to back. He uses Serato and I use Traktor Scratch Pro 2.5. I was going to use one deck and he the other. However, when I plugged the 1210 back into my Audio 6 and tried to beatmatch what he was playing I couldn't adjust the pitch. That is, when I adjusted the pitch slider on the turntable, Traktor didn't respond. I couldn't adjust the slider on the software either.

Am I missing something in the software? I'm believeing this is an Internal v External mode thing. Can I use an external mixer and use internal controls at the same time? I usually only DJ by myself with an X1 but if I wanted to go back to back again then this could be a bit of a problem.