I'm using the Traktor Kontrol S4 and the Kontrol X1 in tandem. I'm trying to map the X1 FX controls to control effect decks 3 & 4. when I do this, I lose the use of the button on my S4 for effect deck 2 on deck A and the button on the S4 for effect deck 1 on deck B. It's a weird problem, I just thought I'm missing something and one of you could point me in the right direction. BTW, I'm not acually mapping the Traktor X1, I'm hitting the swap button in the Traktor Kontrol X1 settings so they control decks C/D and Effects 3&4. Any thoughts?