Romelee,
LOVE YOUR AVATAR ! I may steal it when you're not looking...
Congratulations on the setup. I'm sure you're loving it.
I recently got a Vamo and am also using carto/tank setup. When I bought the Vamo, the supplier set me up with a single 18650 and 2x 18350's. He was actually recommending all 18350's, but I told him I needed to try both options. The stack of 18350's supplies double the voltage(8 vs 4) - a warmer and wetter vape. Mine are also Efest batts. I just wanted to point that out so you may try it later. If you are adding batts, a lot of advanced users prefer MNKE LiMn high drain, fyi.
DickyG: that's a common issue. Most
tanks spin, and I have to look that up because I'll be getting some spinning
tanks pretty soon. However, my first
tanks were Smoktech UDCT's. With this tank and the Smoktech carto, there's a locking mechanism on the bottom. It's a little more fiddly when you refill (have to remove tank from the device), but it doesn't spin. Overall, I'm satisfied. The tanks are only $10 and look fine sitting atop the vamo. They have gun-metal and chrome finish.