I should do a little search before I post a question. I did find something about bleaching if higher contrast developer like #4 is used with Pd prints. I am mixing 1:9 (pt/pd). It certainly does look lighter in shadow. Is this because of bleaching?
Also, about the amount of dichromate, I am getting different information. Some say 1 drop per 200ml and others say 1ml per 200ml. My understanding is that 1 drop is 0.05ml. It does not sounds like they are talking about the same amount...