I just recently bought a KME sharpening system and after sharpening 2 or 3 knifes I noticed that my 600 grit stone seemed to bite a lot less then the 1500. Once I inspected the underside of the both stones I saw that my 600 was already pretty worn down. I don't think it was because I put to much pressure since all the other stones look and feel fine (maybe it was shipped used idk). I was wondering if anybody knows if both sides of the stone (sticker side and normal side) is the same because then I would just remove the sticker and use this side.