so the TOBH is hands down my favorite atty. great flavor and no set airflow options which means i can drill it out to exactly how i like it. the only thing about it that makes me reach for other RDAs is that the little "teeth" used for the AFC are right in the center so centering my coils makes the airflow come in on the edge of the coil and the cotton. if i could find a way to get rid of those little "teeth" i could center my coils and have direct air flow on the center of the coils. any ideas on how i could do this? i was thinking about drilling a large hole in the center of them and using a metal file to cut them out and then sanding down the rough bottoms but that seems sloppy and time consuming. anybody do this or have ideas?