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After a long time of trying, I have finally managed to obtain a 1928 Sheaffer Jade Radite Flattop. It has been my experience that side lever sac filled pens are difficult to thoroughly flush. I have also been told that the Noodlers Inks that I favor are not good to use in an old pen like this. So I must choose one benign ink and stick with it. I assume that there will be residue of ink in it that will initially affect the color of what ever I put in it, but I also assume that if I persist with my chosen ink, it will eventually become dominant. I have seven differnt bottles of Herbin, which I believe to be the mildest amd least offensive ink. I also have a variety of Noodlers, which I think I must discount. In addition I have several Skrip, Mont Blanc, and Pelikan. I do not really want to fill it with black ink, because my Waterman Persian is my black ink pen, I use Skrip black in it. So to help me decide, I want first to decide if I should be concerned with how benign the ink is, and from that choose a manufacturer, then having done that I will choose a color for it.