Spring on airflow has been lost

Gradually the spring on my nautilus aspire tank that makes the adjustable airflow ring snap into place has fallen out. Is it possible to get a new spring, or do I have to buy a new unit? This really doesn't impede on the use of the tank, it just sucks to have to avoid touching the ring or constantly adjusting it because it slides around everywhere. Any help is well appreciated. Thanks in advance.
© 2017 Powered by Aspire