I've been using the same profile on the same paper with same ink for several months now on my Epson R2400. MIS K4 inks on Moab Kayenta with a professionally made profile. Tonight I am reprinting a set of A4 prints for a client, so I know just what the original set of prints looked like. But the prints tonight are coming our very black in the shadows. Simply laying down way too much ink. I've double checked all my settings, and they are the same as ever. Does anybody have any ideas of what could be causing this erratic behaviour? Please don't bother to reply with the stock snarky comments about using "cheap 3rd party inks." I've been using MIS inks for a few years now and, professionally profiled and with regular head cleanings here and there, they've operate wonderfully for me. The only thing I can think of is that the Eboni ink bottle was close to the bottom of the bottle when I refilled it a couple of nights ago. But what would that mean? More pigment in the solution than when the bottle was first opened? Mystified. Thanks in advance for your ideas.