I primed all of cartridges initially ( two weeks ago) and verified they were all functioning properly , ( at this time I couldn't
Did you prime your 3880 refill cartridges as per the instructions? This seem like an air-lock is taking place and creating pressure problems.
OK I finally got this and I'm replying to my own post in case there are others like me who need a lot of detail to figure things out.
I am reposting this as a separate support request which I posted earlier with “Jack in the Box capping station”. This post is long but I
Disregard my previous question. I finally figured it out