Air Flow really effects the flavor - sometimes when it's too tight, I get too much throat hit. When it's too much air, flavor starts to diminish. Being able to dial it in really helps. I love love love the RM2, I do - I just wish I could make it more airy for some liquids.
Just my
Only my observations.
I have gotten really good flavor out of my kayfun and Erlkonigin with a narrow bore tip. If I use a wide bore cherry vapes delrin cloud chaser drip tip my flavor diminishes some whether it is on my kayfun or my Magma opened up all the way. On my Erlkonigin it is a narrow bore with really good flavor even though I am getting great air flow with my AFC ring off. A long time ago before I sadly broke it. I got really amazing flavor from a hand blown glass drip tip from Black Raven with a small bore need to get another one.