the easiest way is just to swap paint brands to an airbrush ready one such as AK or Vallejo’s Model Air ranges.
Tamiya is really a paintbrush brand apart from the arosols.
You want to be over 20 psi working pressure, I shoot for about 23 psi which means with my compressor and lines/hoses I set the gauge around 25 or 26 psi. Then when I push the button for air to spray it drops off to 23. Anything over 20 psi working pressure should work though. If you set your pressure at 20 psi then with paint flowing and depending on your setup the pressure will drop off maybe to 17 psi. The H likes air, they like good volume of air and pressure in the mid 20 psi range, some guys even shoot over 30 psi for heavier paints and the larger needles. But on another note I don’t do much with Future/Pledge these days.
Sounds like you might be rushing your steps a little.
Tks Snap&OMG. I’ve been thinking of checking out vallajo model air…
I know a lot depends on technique/experience but I have found a gravity-fed brush VERY forgiving when learning freehand camo especially for a first-timer. Small tips, nozzles all around.