I just got a 300mm Kono suji and there is an issue with the 3-4cm closest to the heel. With the heel resting on a level surface, there is a 1.5-2cm area that does not make contact with the board before the contact is reestablished about 3cm from the heel. It makes for a very awkward feel when making a rocking motion.
My question is: will this work itself out with a little time on the stones or do I need to exchange the knife?
Sorry for lack of pics, I'm getting crappy reception right now and it would take forever to upload.