I may have a solution for you, starting late next week we will be shipping a new ink for use in place of the Max inks. These inks are made in the United States and are a copy of the Asian inks Roland sells. What is nice is they are fully compatable with the OEM inks and require no line flush or profile change. You don't even need to buy a full set, they are completly interchangeable.
They are $49.95 for the 220ml. We have been testing them in Roland printers for the past six month and they work great. I'm new to this Forum, so shoot me an email if you have questions.