mapping 1 kontrol x1 to work with 2 cdj 800mk2

I need help please. I have 2 cdj 800mk2, 1 kontrol x1, audio 10, traktor scratch pro 2 and ddm4000 mixer. What i want is for the cdjs to behave as normal (jogging, cueing) and the kontrol x1 to control effects, browse and in this case control 4 decks in scratch control mode (controlled by the 2 cdjs). I need help with mapping for the kontrol x1. Especially the deck selector part. Meaning 1 cdj controlling deck a/c and 1 cdj controlling deck b/d. Thanks.