This question has been bugging me for a while. I primarily use acrylic paints if I have to touch something up or customize a figure. However, no matter how well I clean, sand, let the paint dry, and polish it, I can't seem to apply paint that is as resistant to chipping or damage as factory paint. Is it because I am using acrylics versus enamels, or is there something else fundamentally different about factory applied paints? Thanks for your help!