I alternate between my Viva Nova, BCC Mega, and tanks. With my Viva Nova and BCC Mega I am getting juice pulled up through the drip tip .... remove the drip tip and there is a pool of juice in the well. This happens several times throughout the day. Lots of juice being wasted and I am becoming very frustrated. I have replaced the heads, cleaned the units tried different juices. I am normally using Bobo's bounty or Guerrilla Juice so I switched back to KBV and Halo and same problem. Surely there is something I am missing. I have been using these for awhile and this had just started to be the issue over the last couple of months. I use the Provari and Ovale evic. Thanks for any and all suggestions!!! Happy vaping!