zsas, that is a good point regarding the volume used. I basically had carried over the volume from what I did when working with the Fuji Hunt C-41 chemicals, and wanting to keep volumes to a minimum I think that number is partly derived from the minimum that Jobo state is needed to cover 120 film when loaded in the tank on 3 reels.
Thanks for posting the photo of Part C too! That really helps... I've been wanting to buy a full-on color calibration chart for a while now, and I think this is going to be the reason I use to get one. With an upcoming family vacation, I'm planning on shooting quite a bit of negative & positive film, and don't want a repeat of this last run (which did surprise me given how consistent things had been before I started using the Rollei chemicals).