Hopefully someone can help me with a small problem we're having. We have a VS300 that has drop out problems on one or two colors. I've done all the recommended fixes; manually cleaning, machine cleaning, changed the wiper scrapper, changed the cap station, changed felt and rubber wipers and even did an "emergency head cleaning" (as Roland states in the manual) and still have the same problem. The print test hasn't changed a bit. I've attached a pic of the test print. Does anyone have any advice for me?