I have a Star 400 HVLP gravity feed gun and it works ok with high pressure 40 psi When I try to spray at 10 psi at the gun / nozzle; the paint builds on the tip and goes on thick and mottled. Sooo I'm looking for another gun. Can anyone recommend a better gun please. I'm in Australia. I'm thinking toward IWATA units. Does anyone have ideas about these guns ?