You could be making the Arkansas rougher, especially with the Crystolon stone. Also, if not careful, you can round the edges and also reduce how flat the stone is. Norton Hard Arkansas stones are expensive and I would only try to rub something on them that I wanted to sharpen. If the stone goes out of flat, and needs to be flattened, that is a different story. I have a few Norton Hard Arkansas stones, and they are pretty flat and excellent for woodworking blades. They are finished better than other Arkansas stones that I have. The India and Crystolon stones are impregnated with oil. If you want to use the Arkansas with water (as I do and prefer water), I would try to keep oil off the stone. Norton hard Arkansas stones have gotten very expensive and so I am careful with mine. It is also more difficult to get good ones, and Nortons are the best that I have seen. I also have some Dan’s stones, and they are not as flat as my Norton stones. As mentioned by another poster, you could get particles from the other stones lodged in the Arkansas and reduce how fine it is.