Hey DJTT, it's been a minute!!
I have upgraded a few things lately and am now using a Scarlett 18i20 soundcard in my studio for djing (audio8dj for playing out). I cannot seem to find how to control the master volume when mixing externally in Traktor Pro 3. The volume control is grayed out. I am not too sure if it is because the Scarlett is not officially supported by Native Instruments or if I selected something incorrectly. Any help is appreciated, thanks!!