Thanks. I have been experimenting. So far it has seemed that the most important aspect of this is the initial Dektol development. I am using Fujifilm Crystal Archive II.
Dektol 1:2 for three minutes is what I have found to work the best for me. Then standard RA-4 process. My experimentation has not gotten to the point of extending it as of yet.
Do you know what may be causing this fogging / mottling?