A year or so ago I printed a photograph of Wright's Fallingwater on Ilford warmtone paper in Harman warmtone developer, then toned for 6:00 in KRST diluted 1:9. The combination gave me the loveliest delicate brown tones in the highlights and mid ranges. The other evening I printed another image with the same materials, time, dilutions, etc. expecting the same result. This print has a green tone to it, especially when compared to the Fallingwater print. Anyone have any ideas what isn't working the same for me?