Very nice Fred. I'm happy you like your new Arise. I have my coil set to ~1.5mm above the air disc. Flavor, oh yes, and then some. I rate the flavor from the Arise as right up there with any of my top shelf RTA's. FWIW, the Squape Arise has been in my rotation since its release last Oct.
@Pigs is correct, your Arise does have the chimney reducer installed. I highlighted that for you in your photo. If you remove it you will get much more airflow. By default an authentic Arise does not have it installed. With it installed airflow is reduced to 3mm.
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@charlie1465, Arise airflow is dual sided and it will very easily do a fine MTL (tight to very airy), RDL or DL. See the base photo, that is with no air disc installed, and is specifically for RDL or DL.
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AF all depends if you use any of the air discs. StattQualm does sell optional RDL air discs to further fine tune your airflow. As follows...
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Additionally you can adjust the airflow by rotating the tank section. AF can be fined tuned to however you like it.