Brigadier_Condor

Hello guys im new here , this is my first post ever. I have a very annoying problem with my aztec a4709, everytime im painting, after 10 or 15 minutes i start seeing bubbles coming out from the tip of the airbrush (where the plastic nozzle meets the metal nozzle) and then the airbrush starts to spit water all over my work. I tried changing my nozzle (fine line, tan) for a new one, installed a moisture trap, but it keeps doing it. Thank you very much in advance.