I am almost understand how it works. My today best result Irakli-test-III.jpg at now I understand why ciba prints was so expensive You need to do very much test prints to get great result. I try to mix Your developer 1 / 3 and I think it works better. Developer Works like soft working developer and I can get soft "grey" BW neg. For normal BW process this kind of neg is awful because very hard to get normal BW print but for this process it works great. Tomorrow I try mix developer 1/4 and I do many Re-exposure test and I think then longer Re-ex time than better and colourful print You can get but I not shore yet I check it tomorrow.