I have a clone, although I haven't used it in awhile. The delrin insulator on the positive post melted on one of my early builds (probably wasn't delrin), so I have since removed that. It works without it, but I have to be careful that I clamp the wire in between the nuts and don't let the nuts touch the deck.
I wish I could get more airflow to the coils, but its not really designed for that. I also find that my dropper tips don't fit in the airflow hole, making it hard to drip right on the coil. And I would prefer to look at my wick when dripping, due to the way the deck is at two different elevations, but the only way to do this is to take the entire top cap off, which is the entire size of the atty and leaves the deck without the side walls.