I had 2 Epson XP-600 printers for a while and now only need one. The one I'm using is running out of ink. Would it be a good idea to take the ink out of the unused one and finish it off, leaving the old one with no ink cartridges in it? I'm a little worried dust might get in there and mess it up. Is this something to be concerned about? I have new cartridges I just hate for those to go unused and go to waste.