What is your question exactly?
I didn't really understand what you want me to help with, sorry.
Is there a problem with the airbrush in general or just with the Plasticoat paint you mentioned?
You mentioned painting a "body" also. Do you mean "body" as in the human body?
Mike
“Wisdom is the right use of knowledge. To know is not
to be wise. Many men know a great deal, and are all the greater fools
for it. There is no fool so great a fool as a knowing fool. But to know
how to use knowledge is to have wisdom. " Charles Spurgeon