I think this'll be the final update for a bit. I did another roll yesterday, and I had the opposite problem. I heard that the problem with the CineStill kit was that the first developer wasn't active enough, so I tried a stronger dilution. 8ml first dev, 6ml water. I did it for 12 minutes at 115 F, which is a time and temp I'd done before. After all was done, the film was heavily overdeveloped. I shot half the roll at box speed and half the roll 2 stops over, since 2 stops over looked almost good at normal dilution. The photos 2 stops over were completely blown out, but the photos at box speed had some detail in them. Colors were very washed out and reds were almost totally absent, but there's no heavy purple cast! I've had great success with using D76 (undiluted, ~11 minutes, 110 F) as a first developer with only slight color shifts, so I'll be using that from now on with the rest of the CineStill kit for everything else.