well... there's nothing anywhere in the feed path, I even forced it to pass something by putting a sheet in the back then turning it on, it fed it through no problem before then doing the same thing again...
But I did try powering it down with no carts, then on, then reinstalling carts. Back the the same thing, blinking lights.. then I restarted it with the paper in the back.. it fed through then gave me the ink light, showed 2 inks "out" again.. reseated those, did it's cleaning thing, now we're back to double blinking lights.
This began after a period of little use, was going to work with it on a new blend... previously had worked fine, then a few weeks "off", put new test blend in, and now this.
I'll try some of the newer carts when I can Dana, thanks for the help.