[buzzurd]

I recently purchased the caswell hobby kit.I can't seem to adjust the flow of powder.I have screwed the bottom screw all the way in and am still getting way to much powder.I'm running my air supply at 10 psi.If I tilt the gun side ways the flow slows.I'm also using the larger diffuser.Should I be using a smaller diffuser for small parts?How far out should the diffuser be from the end of the gun?How much powder should I have in the cup?
Thanks