3880 not printing well after repair

I had the pretty much full internal assembly in my 3880 replaced. It was showing failing nozzles. Now all are showing correcting in the nozzle tests but the prints are washed out. I don’t seem to be getting the full blacks in prints. What is happening and what can I do to address this very frustrating issue. What other lanes of investigation should I follow?

Please send a photograph of the prints to me:


along with your Photo Black and Matte Black LOT #s on the bottles.


I will shortly . Have to break for a meeting.

Jeffrey Lewis
Brattleboro, Vt 05301