知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。It does function very well , the sole other mod I did was place an extension on the end where I inhale from so I'm able to see whats taking place Within the device .then Make sure you pack a more then half (heaping) bowls worth. you'd like to be cer