I've been trying out Mike Ware's Palladium method...using Ferric Ammonium Oxalate / Palladium chloride + Ammonium chloride. Ware talks about using humidy as a contrast control. I'm just wondering if any of the other contrast control methods used in tradtional pt/pd would work with Ware's Pd mix. I guessing that as it's a POP method (i'm getting close to full print out so far)that using dichromate in the potassium oxalate won't do much. Would Na2 or anything else in the sensitizer mix be worth trying? For the platinum salt, he uses Ammonium Tetrachloroplatinate(II), I have some Sodium Chloroplatinate Solution (20%). Would I have to mix that with some kind of ammonium salt before using that as the platinum component in the ware method?