I've searched Photo.net, and found all sorts of ideas to use benzotriazole, Edwal Liquid Orthazite, etc. I have a large number of 120 rolls of old Tri-X (the film with lots of silver content), but it needs some help. In testing for fog, it's coming in with base fog of .52 to .60. Also, using a three minute pre-soak, the film "looks" overexposed. Printing is pretty good, as I am printing through the fog. Shadow detail has been somewhat acceptable, but the film still needs a little help getting rid of some fog, if possible. Any ideas with tried and proven methods? Thanks so much.