I've got a obs crius rta and for some strange reason I get a quite a bit of spitback unless I close the airflow to nearly shut. Also I've got a dual 24 gauge 7 wraps reading .16 ohms and I can't vape over 45 watts without dryhitting. But I'm putting that down to the high VG juice I use. Any advice welcome. Have the same build on my griffin rta and have same issues