I'm sure this topic has been discussed in the past here but I haven't been able to find a thread. I'm using the Badger Renegade Velocity equipped with an in-line air valve and using water based paint (Polytranspar and Lifetones). This brush has been awesome and always reliable until a few weeks ago. It started spitting paint, especially scale detail black or green, a tiny bit at first but progressively got worse. I have given it a complete and thorough cleaning and replaced the needle and tip. The condition has not improved. I have noticed that the pressure on my compressor runs at 50psi and cuts in when it falls to 40. Apparently the regulator is faulty because I can adjust it all I want but the pressure remains the same. Admittedly it is a cheapo, the first and only one I have ever had. I believe the brand is CE? Anyway, any thoughts or advise on which way I should go next? I certainly know how to clean an airbrush but by no means am I a "mechanic"! Also, water base paint or oil? Which do you prefer? Thanks in advance for any advise!