I am having an issue when using my MIDI keyboard through the babyface and Reaper(win7) When I strike a certain key on the midi controller it will automatically engage the Dim switch in Totalmix/babyface.  Other key strokes will also change which snapshot mix is being listened to.  I cant seem to find any assignment section for this.  Please help as trying to record a piano take and having the mix "Dim" every time you hit a certain key is quite annoying.

Thanks in advance for any help.