...The Tamiya gives a dead flat finish if you get the mix right,but if you use too much the paint will dry with white spots...
The best flat finish I have ever used is made by Lifecolor.I brush it on but it can be airbrushed.The Tamiya gives a dead flat finish if you get the mix right,but if you use too much the paint will dry with white spots and the only way to go will be to strip the figure down to the metal and start over.You have to experiment some to figure it out.