I bought the authentic Velocity V2 rda for about $100. When I was too tired I stripped one screw and may have stripped the post because wire wasn't holding with the replacement screws. I need to order more hex screws to know if it's definitely broken. It would make me feel somewhat better and/or worse to hear other people's stories of mods RDAs & tanks that they broke, broke on them or lost after spending a lot of money on them.