I’m painting a Hooben Leopard 2A4 (yea, I know…). I primed with Mr Surfacer as a black base and went over that with some 1500 white. I’m airbrushing Tamiya NATO green and after a few hours touched the surface and the paint wants to rub off. I cannot tell if it’s because the rough printed surface wants to come off or I should avoid acrylics with 3D printed parts. any suggestions?