Just got my 13 inch CAK. Handy, tough little kuk, fat spine and stout, but rough finished (Chitlangi's spoiled me). That's ok, I plan on using it rough anyway. Do anything to it and not worry. Only thing I might suggest - just because the kuk is a bit smaller doesn't mean the karda should be sized for Barbie to use. I'd rather discard it and the chakmak to make the sheath more slim. Guess I could use the karda for a toothpick! Ha.
One more thing. With my index finger on the cho, it balances perfectly like weight scales. I like that feature...a lot. I have one other knife that balances similiarly (balances at the finger guard) - and her name is "Mary Poppins", because she's practically perfect in every way.
Happy with the purchase. Can't wait for my kerambit.
Kevin