The fact that this tank does have finicky leaking problems, coupled with the awkward wicking niggles, means it's a write off in my books. Mine is a 22mm.
I've tried everything with the wicking, and it's just too fussy. The wicking wells / juice holes are a bad design in my books and I don't have time for this tank. And it dry hits too often.
I bought a Kayfun 5 clone (by SXK) off the back of some POTV forum members recommendations, and it's just amazing. 1-1 clone of a £100-ish tank (yes that's too steep for any tank) for around £30 (or half that if you are prepared to wait for FastTech delivery). It's only single coil but that's all it needs - it's just a cut above. Everything from the way the juice and airflow works, to the build quality, the flavour... You name it it's got it. Hasn't leaked or flooded once and an absolute pleasure to build / wick.
The Griffin 22 is appalling in comparison... Can you tell I like the Kayfun?