Brake 6,
Did you strain the Polly Scale before you
airbrushed it? Pantyhose works great or you could use
fine plastic or metal mesh that's clean to strain it. Polly
Scale paints might have very small to medium sized
lumps of paint that will clog your airbrush if it's not strained.
Also if the jar is left open too long without
being capped it will start drying . Cap it soon as possible.
Could be too old or a bad batch.
fuzzy