Help! The Air Flow Control Ring on the atomizer base is stuck. Is it supposed to spin 360°? How can I make it turn without unscrewing it from the coil stand (which is the rba section of this two-part base). I tried holding the base by the 510 w/ needle-nose but it still won't turn. I just got it today. Could it be defective? Anybody dealt w/ this problem before? May have to send it back.