I have a nice old coticule stone that is about 1 1/2 X 8. I lapped it and aside from some hairline cracks from age it is a nice stone. However, no matter what I try I can't get it to put an edge on my razors. I have owned and sharpened about 50 razors over the last 30 years or so, using various stones and means. Using the coticule though, no matter what I try, and I have tried the unicot and dulucot methods, and just water and end up with a razor that is not sharp. Every time I try I end up finishing it on a different hone. It just don't work for me. I hate to do it but I think I am going to use oil on it and try that. I don't know what else to do. Any suggestions?