a touch of Vaseline on the needle pulled back is the most i have ever done. not enough to get anywhere.
the savings from using the iwata has more than paid for its self and more. these guns would have made me a lot of money back in the 70's 80's .
but beware the cheap gun. you can create many problems with a cheap gun. yes you can get paint on it but there can be a host of problems later on. solvent pop and shrinkage being the main things.