Reply to Midi Mapping Help

Hey Guys, I'm an amateur DJ who just bought Traktor Pro 2, and I am having trouble fine tuning a MIDI map that I got for my DJ Tech I-Mix. It's not a great controller, I know, but it's what I've got. The problem I'm having is that my low kill for deck B won't work properly. It's stuck on kill, and when you press the kill button again it takes away even more off the low end. Any advice would be helpful since I don't have any experience with mapping MIDI controllers. thanks!