I know this is late response but get "createx restorer" it's way better than alcohol I love the stuff. There's also a video about polishing the needle that Mitch has, worked great for me. Also for the inside of the airbrush I use an ultrasonic cleaner from amazon for about $20 and it's amazing. Just a couple of my tips cause I have this happen all the time and know how frustrating it can be after breaking everything down and cleaning it, and still having issues.
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