I recently bought my first few J-knives. A Fujiwara FKH sujihiki, a carbonnext petty and a misono parer. I noticed they all have a tiny bevel OOB. I can't really get them sharp. Am I supposed to keep these tiny bevels or should I try to improve them. I am using Naniwa Chosera stones. 400 / 1000 / 3000 / 5000. I am still learning how to sharpen properly. I bought these knives to train myself in sharpening asymetric bevels and carbon steel.