Daniel, I was thinking you tried the Lindwurm? I got one for review and built it with an included coil and the 2.1 airflow insert. I have to turn it up pretty high to heat the coil but the flavor just isn’t there. I think I’m going to have to switch to a larger airflow pin. I thought people raved about the flavor on this. I guess I need to play around with it more.
I have given my Lindwurm a good vape Mate

Mine has the 2.5mm a/f insert in there, the more air coming out from under the coil the better I think! Then adjust your external a/f accordingly.
I was getting pretty good flavour from this, definitely not Brunhilde flavour though so it's not in regular rotation.
It's worth playing around with a bit more. You'll get the Worm tasting nice