Thanks for the reply Dana. On page 3 of the refill cartridge instructions it only lists "Setup with Piezography K7 Inks", there's nothing listed for the K6 Inks. Didn't know if the K6 would be the same so I posted my question.
After more digging / searching I finally found the answer to my question. I realize it must get really frustrating for you folks with all of these questions you get from us newbie's who should read the manual first; however sometimes what we are looking for is not easy to find.