I have been having no issues producing negatives for Pt/Pd printing using Pyrocat HD 1:1:100 in my Jobo. I use the suggested times in the Massive Dev Chart, but I run my film at 75F instead of 68, because I can't get cooler than 75 in the summer out of my tap, and I hate playing around for half an hour or more with adding ice cubes and then waiting for the Jobo thermostat to bring the water back up and stabilize. I have used it primarily with FP4+ for a slow speed film, and Foma 200 for a medium speed film. I have yet to use it with HP5+ or Tri-X 400 for Pt/Pd prints. HP5+ will probably happen, but at current Tri-X large format prices, that's not likely.