When I purchased my Vamo, the store manager tested my Evod on the store testing unit. At first it didn't fire, so he used an adapter and it fired fine. I had misplaced my adapter and tried the Evod on my Vamo without the adapter and it fired just fine. I also had trouble with this Evod on an eGo unit and blamed the unit. Now, I think I have a bad Evod. So for those who use an Evod on your Vamo, do you use an adapter? Would also love your recommendations on where to buy Evods. I am looking for a new vendor. Thanks!