guys i paint miniatures too and i use vallejo air paints. Theses paints are way thicker than regular airbrush paints and they can clog the gun super fast. Then i saw in a local shop vallejo flow improver and this thing is a miracle. Like seriously. You mix it with a paint + your regular reducer and the paint just flows and flows... Best thing is that it really does keep the needle tip clean! You might clean up the needle sometimes but is significantly less than usual! Once I was painting with a black paint and i cleaned up the tip after maybe one hour of spraying! I was impressed. I dont know of anyone else tried to use it with the regular airbrush paints (trident, createx, etac etc...) but give it a try. You might be nicely surprised.