Mine was the cleanest rda I have gotten yet, not even a hint of oil. I did wash it well anyway. I have seen others say that their's was loaded with oil, must be hit or miss. Build quality is outstanding. It is taking me a bit to get used to bottom air, it is a bit less forgiving than a Velocity. I am not used to how much i can drip before leaking. Normally I fill a dropper half way or more and dump it blindly between the posts on my Velocity and have no leaks.
Flavor is killer on the Tsunami though.
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ODD! Mine was full of cutting fluid. TOTALLY agree on the machining and build quality. Superb! I love that the drip tips SCREW in, too. It is touted as having a VERY deep juice well, which is true, that holds a lot of liquid, which is not true. The air outlets eat up a considerable amount of that real estate, and the wicks in having to reach the bottom (and I went ONLY to the bottom, not piled in) takes up most of the rest.
The engineer in me is looking at the air. Seems we choose either bottom, top or side flow. I'm thinking this atty would have held much more juice, and had better air coverage on the coils if there was ONE bottom feed tube, dead center, with 45 degree holes on each side, and a small hole in the sides pointing to the coil. The vapor production is great though, flavor is very good, and the deck is super easy to build on.
So it's very good, I'm just not convinced it is surpassing the performance of my Petri in any meaningful way.