Post up some pictures for me if you could. What kind of pitting are you dealing with, exposed metal pits or pits covered up with black oxides? If you use a acidic solution such as naval jelly or CLR, you would have to remove or change the finish on your knives. A brass gun cleaning brush from a gun specialties store might be just gentle enough to clean away the oxides with the least possible harm to the finish (1-2$) Just to clarify ~ What are you trying to do, Clean the black oxide from the pits, or get rid of the pits entirely? The only way to completely remove pits from knives is to remove medium... Have you considered parkerization? Are you against changing the finish? I can help you with instructions on how to strip finishes and such, but I need to know exactly what you are dealing with what you want to do with them. Let me know if I can be of assistance.