QTR-Quadtone RIP

After s siege of poor nozzle checks I've spent a good deal of time getting good nozzle checks from my 1400 and am ready to resume printing. I chose a couple of prints I had had good results with before but are now, somewhat later, a bit anemic. What could have caused this? This occurred after a refill of my carts (usng VT Carbon 6 inkset) and it's quite possible I may mixed up a couple of refills.

So I'm all set to fill up a fresh set of carts and see if there's some improvement. But before I do that, can anyone suggest something else that might be causing these weak prints? If it's something simple I won't have to go to the trouble of starting with a fresh load of inks in a new set of empties.

Thanks all.

Well, it was something simple after all. In fact, it's embarrassing, and I could delete my question. But perhaps it will add to our database.

I had chosen the "Warm" curve for Curve 1 of the C6 VT inkset and I chose "None" for Curve 2. But from a previous job, under Curve Blending, I still had entered 50% for the warm Curve 1 and 50% for the neutral Curve 2 in Highlights, Midtones and Shadows. Even though I had unchecked the box for Split Tone Curve Blending those false entries were apparently enough to weaken my print.

So, I deleted all references to Curve 2 and my prints came out fine.