Vaughn, great to see the sea cave image again. I held that one in my hands and it turned me into a carbon printer! I think if you know the developer that you use do as Vaughn suggests. Take a couple of images and develop them for different times and get a base for the process you are using for printing. I have been using Sandy's Pyrocat-HD for a while now and love it for my negatives on all types of film. Even my 11x14 x-ray film!