Quick update: I received the Old Manhattan Blackest Black ink and OH MY GOODNESS, that made a difference using the correct inks. I only had a drop left of the 54th Massachusetts ink plus the residue in the sample vial, so the ratios of the inks aren't likely to be exact. Because of that, I won't post the results until I get more 54th Mass. and can do it up proper. In any case, I am doing the happy dance as the shading is great.
Ok, now I want it. If you are willing and able, it would be great please to see a side by side swipe of black near old manhattan near Masque's blend.