Just got a new airbrush. I've used it twice, and just noticed the stopper won't close. So, the air flow is constant, even when I want it "paused". Any tips on what is wrong? Instruction page didn't offer any troubleshooting. KopyKakes brand.
Thanks.

Maybe your needle is set too far back in the gun. Adjust that and that should fix the issue.

if you have a single action airbrush then the air always flows out the tip and you only have to control the colour flow by pulling back on the lever. If you have a double action airbrush the air only comes out when you depress the lever and the colour flows when you pull back on it.

If you are having a little colour escape with out pulling the lever back then turn it off, take out the needle and clean it off, and out it back, it is not sitting right in the nozzle allowing colour to escape.

Thank you. I may have to take it somewhere. It was a gift, and I've never seen one used before...let alone taken apart and cleaned. Thank you for the advice on troubleshooting.