Well, I got my siren 2 last night at the local vape shop. For a $30 tank, it’s built surprisingly well. Taking it apart to clean it before first use, resulted in the upper o-ring getting destroyed. It seemed like it was almost glued to the glass. Glad spares were included. Performance is great for my MTL preferences. Well adjusted airflow, plenty of vapor, loads of flavor...BUT...it leaks. A lot. Right out the air hole. I built it identically to my trusty KF4. I would guess there’s too much wick, even though the wick is well clear of the air inlets on the deck. Frankly, I just don’t have the desire to fiddle with it. Reminds me very much the old erlfuckinkonigan from way back. It’ll go to the land of failed-rob-vapes-drawer post haste.