a quick update.
A local shop in Calgary was kind enough to speak to K2 on my behalf and organise an exchange for k2 National Autos.
I have to say i am very happy with the auto bindings, compared with the Cinch CTX.
The Cinch is a great idea, but not implemented well enough to be robust.
I dont know if i got a bad pair of CTX's, but they were too irratic with the cable slipping to be a convenience binding.
Auto's are solid bindings. My only complaint is the toe strap likes to trip you when getting out of the binding sometimes.