I love the improved airflow...big difference over the regular stem! I also like the way it fits in my lips.....not too thick.
However, the hits are way too light....it feels like I'm not getting much vapor at all. The flavor it's great but the vapor and stem might be too hot for my liking.
If it's a short version, that's to be expected really? There's
less herb in there to make vapor......
therefore less vapor?
I also suspect you're drawing too hard. Unlike blazing (where more airflow means more fire and more heat), the heat available to make vapor is fixed. Drawing cold air in (now easier to do in larger volume) uses some of that heat to warm the air, meaning
even less is available to make vapor. Heating extra cold air robs the heat to make more vapor even as it's diluting what vapor you're getting unnecessarily.
Such stems will remove draw restriction but you have to ask 'why is it restricted to start with?'. Surely Arizer tested different hole sizes and decided on the level of restriction they used for reasons that seemed good to them at the time?
You can boost the heat to compensate, but then you sacrifice more taste since the temperature is higher?
Your experience is very common. Reduced restriction and desire for 'bigger clouds' encourages guys to hit it harder overrunning the oven. You get faster, bigger, but
less dense hits as a result. Slow it down, you'll get thicker hits.
A lot of us went to lots of troubles to get PVHESs a when they first came out, lots of us have gone back to stock stems (including the ten dollar stem for the Air which will mate with a WT just fine).
Good luck with your experiments, I'm sure you'll find a configuration that suits you.
OF