Hi guys. I'm new here. I'm the owner of a printing company in Seychelles for 9 where we had been using the Roland VS-640 until last November I bought the RF-640. Everything has been great until a couple days. I've been having issues with cyan missing in the test prints. After a couple of medium cleans they will restore only for them to disappear again soon after printing starts and thats pretty much the cycle. Missing cyan, couple of cleans, waste ink, perfect test print, starts printing perfect, after a couple of inches printed the colour changes, test print shows missing cyan and repeat..