I used a 3mm ID coil dead center, thought about a bigger coil but was worried it would be too close to the airflow and my mouth, didn’t want to kiss the dragon and wind up with crispy lips. When I looked into the drip tip I could see the 3mm coil, that is when I thought…hmmmm, this might get hot. There may be a better way to get a single coil positioned in there for better results but for me the Loop just digs dual coil builds.
Thank you for the comments @SmilingOgre @anon96069639 and @Fishaddict420. I have been burned in the past by YT reviewers who if they spent more than a couple of days with an item would have found flaws. The biggest was the Vaporgate Dumptank 30mm that I spent $60 on and after 2 weeks was trash, top cap gets loose and the tanks loses pressure and yup…dumps all your juice, an unfortunately appropriate name for that tank.