Does anyone know how to sharpen those darn things (Ek daggers)? I have had one for ten years and the knife is to thick at the edge. I can't get the thing sharp no matter what I do. I love their daggers but can't sharpen the thing. I wish they would come out with their bowie models again, but as usual they don't listen to someone who knows of a problem with their knives. Please any help with this. Thank you.