I recently purchased a L Rider Lambo, the chrome version of the Lavatube. When I tried using my Vivi Nova on the Lambo there was no airflow and no draw. I searched the forums and the solutions like blocking the hole in the Vivi base and tweaking the spring post of the Lambo didn't work. I found the fix to be very easy: take a pair of tweezer tipped pliers and ever so gently squeeze the battery connector on the base of the Vivi Nova together. The hole becomes smaller and the center post of the Lambo can't block the airflow anymore. Hope it also works for you guys.