You might want to think about bypassing the Kayfun and going to a Lemo. Way better airflow control and easier to build on!
^^ Yes. My 'clear' double chocolate arrived today from TFA.
Lowering the flavor content in my recipes from upwards of 18-20% totals down to 8-12% (especially where the dark flavors like coffee and dbl chocolate are involved) has really done the trick I think. This latest Caramel Macchiado Latte is delicious and has been vaping very good on the same atty for nearly 2 full days now, which is a big improvement from where I was on Tuesday when when I started.
Mixing now at % 42pg/58vg too which is also where I'm wanting it.
If this atty is still going strong this time tomorrow then I'll know that I'm zeroing in on a good balanced mix.