Hi everyone. I'm a amateur vapor I've been vaping for a few months now. For xmas I received the vaporesso target pro & was wondering if anyone had any feedback on it. And does anyone know where to buy an allen wrench small enuf to tighten the top screws? I don't know if anyone else has had this issue with this mod but my top piece gets loose from time to time. Ive been just using a small pointy knife to tighten it as needed being careful not to strip the screws. Just to clarify the part its the top piece above the battery housing unit and below the tank, the vape trigger part sorta speak. Also with that said and all the talk recently of people blowing off their faces and what not from their mods, does my mod have a safety mechanism that reduces the likelihood I'd blow something up? And why are these mods exploding? Is there anything I can do in particular to reduce my risk of my mod exploding?