Reply to Scratch Mapping Problem!

Hey, i've just got a new controller for my Traktor 2.

I found a midimap online which has worked so far, but when I find beat with the jogs and then go back and forth on it...it starts rolling the track backwards instead of going back and forth.

At first i thought it had something to do with that the acceleration on "back scratch" was higher than on "forward scratch", but i checked it out, and it's even. So how do I map it right?

Thx in advance