TomCatt, I have only used bauway CE4s, ViVi Novas, Smoke SRT ViVis & have been vaping only a month. That said, I do not use the silicone cup caps on the CE4s & Novas. I keep My modded SRTs upright out of habit, as well :blush:
Here is one of my SRTs. WARNING: Old coot :vapor: with a new hobby...