Second best approach would be to wash the carts out with distilled / demineralised water. I don't have any IJM 3880 carts, but I've been told by another forum member who has tried this that it can be done, but that it's mighty tedious. Whichever option you select, you'll need to run a power cleaning cycle to get the Special Edition ink down the ink lines to the print head. Either that or several power cleans, or one heck of a lot of purge patterns. Carts-on-head printers are so much easier for this kind of thing, although cart washing is still tedious.