Thanks Guys, it appears the rattling, as
@Justpassedu and
@TheChillBud posted, is a ball bearing in the mouthpiece that keeps the water from leaking out. Good idea but,...(see below)
Initial thoughts, after a session or two.
Pros:
-Neat design
-Strong, clean build
-Built in water filtration with no leaks
-Produces good clouds
-So far, it's easily cleaned.
Cons:
-Very restricted air flow, almost unusable at times(I've played with the two screw settings but may need to get to know them better).
-The unit has a bit of a machine oil(?) taste. This may be on me, I have a bit of sensitivity regarding this. Eventually, I had to give up on my Indica and Ascent, and was never able to use my big Flowermate(the big unit, forget the name now) because of the smell/taste issue.
I believe both the airflow and smell/taste issue in the H9 are related to the ball bearing, and it's housing, in the mouthpiece.
Clearly there was work and consideration put into the design of this vape. I can imagine the future of this company being bright as they refine their design. It's very impressive in a number of ways, but if, after thorough alcohol and coconut oil treatments, the smell/taste remain, I will, unfortunately, not be able to use this cool piece either.