just got mine 2 hours ago, machining is very good,no machine oil film just did a quick hot rinse. be careful if your going to use the 4 ml setup there's a little o ring that goes on the top and it's laying loose along side the 4 ml chimney in the box. perfect mtl on biggest hole. if you try to vape without firing it will suck up extra juice easy. chain vaping will get a little warm, I'm using a kathanal 28 2.5 1.4 ohm coil with cotton with 70vg/30pg plain diy juice. ready to order another 
