Can some one help me on Mutoh VJ 1204, I just put new printhead 3 months ago with new cap. I don't use the printer every day. I am a small printer. I have problem with black. I do a nozzle check, all the lines boxes get printed from left to right accept last line box to the right does not print at all. Can some one have remedy for? I did cleaning and flush cleaning solution from the of manifold nipples for black only, also change 1 damper but no success. Now I create black in the file in CYMK to print, but still it feel greenish black. Can some help me it will much appreciated.. Thanks, Dishhobby.