Autarch Tragedy

So I was working on my autarch for Way of Saim-Hann's contest. I used Armory black primer, and it destroyed my model. It came out looking like he had ridden straight through a black, sticky snowstorm. The model was covered in powder. Not to mention, it wasn't black but a dark gray. So I'm never using Armory again. It did the same thing to my Scorpions, but not as bad. It didn't powder my vehicles, but I did have to go over them in black because the basecoat wasn't actually black. And while I was holding it one of the flags broke off. So no contest for me.