I found an interesting comment from Aikido Journal on how the usage of internals, and further, aiki, can provide for kuzushi on contact:
http://blog.aikidojournal.com/2012/1...#comment-39263
What do ya'll think of the ideas elaborated there - that it's simply more about you in the end and working to make you, literally, an expression of yin and yang - as opposed to, say, the four-legged animal model where you worry about connecting one center to another?