and it sounds like it's not filled all the way

(hope I put the it in facing the correct way) and then pull the tray back out, reset the guides, and put the plain paper back in, and reinsert the tray.

The paper trays have a nice solid feel to them the way they snap into place

There is no way to get to and manually clean the print heads or replace them

Both B&W and color print much faster than my WF-3640.

However, if i disable the wireless and use the ethernet port everything works as it should.