Audition 3 auto limiting to -6 on a Scarlett 6i6?

Hi - my M Audio Delta soundcard started to create nasty noise, so I've put in a Focusrite Scarlett 6i6, and pretty much got it to work. But whatever I do, when recording in Audition it limits the sound to -6....which is pretty puny.

Never happened with the Delta - any ideas?