get a dual coil postless deck. that way you can build a single coil with both airflow and not have post blocking the airflow. most single coils will have a restricted airflow. Kali v2.
Great little device. light and pocket friendly. threading for the lock nut is a bit rough.
the rba that it comes with surprised me, punches way above its weight class and I have tried a lot of bridges. both for mtl and rdl.
the abyss aka the gap mod.
try adding an oring to the base were the bottom of the glass sits. that will give the tank the additional height so that bridge will sit flush to the top of the tank.