Both of the deck assign (DECK C and DECK D) buttons on my Kontrol S4 have become unreliable, often getting stuck in the depressed position. I would therefore like to map these functions (Deck A -> C and Deck B -> D, and vice versa) to another pair of buttons (most likely either the Flux or 3rd FX button on each deck). I have located the Deck Focus Selector in the Layout section in the Controller Manager, which I presume is the right function, but I haven't had any success getting assigned buttons to activate it.
Does anyone have some tips relating to how I might achieve this?