after exposure you are to place the print into water for 2 mins with light rinsing. Then into the Citric acid. Well when I place it in to the water the print lightens up as much as a half a stop and some highlights disappears. Now I print in Pt/Pd and was just trying this since Pt/Pd now go for outrageous amounts. Now you should be able to expose the print and when it looks right you have it. well I find that when I get the right exposure I have to guess how much more I have to expose it to compensate for it lighting up.
Two: using Sodium Tungstate to change the color, I have use 1-5 drops without much change. Also when increasing contrast I have used Ammonium Dichromate and got some increase in contrast and a lot of increase in exposure time, along with making the color of the print a gun metal gray instead of brown or sepia that I expected to find. Can anyone figure out why it does this type of thing. I find it a lot easier doing Pt/Pd.