from what i've been told by printer techs, the dx2's don't really really need head ranks. i once had a long discussion with a tech (he rebuilt epsons for living), he said he mixed and matched head ranks on dx2 and couldn't tell a difference in print quality with a loop. so, for what it's worth... if the print looks good, and the customer is happy.... i wouldn't sweat it if you just don't have it.