Hi JR! It was really nice to meet you, and your family, last Saturday. I hope I gave you some thought provoking comments on vaping especially regarding vaping safely. I have come to learn that the 18350 stacking, you showed me on your mod, is a recommended set up for it! I just didn't own since I don't own that mod. I had to field a question regarding it, last night, and finally checked out the owner's manual just to learn. Take care; happy and safe vaping and building! CAW!