This only happens with my evod 2,s but whenever i use a evod2 on my mvp 20 watt ( gotta use the adapter ) it does not connect and the mvp just says nun on the screen. It only happens with the evod. When i use other tanks that need the adapter i have no trouble at all. What can i do to fix this? I have several evod2,s and almost all of them do this but none of the other tanks that need the adapter do it. The other ones work fine.