Hmmmm, I've been using the same exact routine, leave-in, CK and then KCCC and I always diffuse with no problems.
Not sure why you got frizz? Maybe too hot or you moved your hair around too much?
BTW, I don't get much crunch with KCCC, but what little I do, I just scrunch out when my hair is all the way dry.
My other favorite with CK is AG Re:coil.