If that continues to be a problem, I know it's not the more common 510 thread, but an alternative would be the Smokeless Image Volt Spinners in an 808 thread format. Essentially a re-branded vision Spinner. They also have their re-branded T3 clearomizer (their carto's and the T3 are "allegedly" manufactured by Kanger). I'm pretty sure that Got Vapes sells mini vivi novas in an 808 thread.