I have a King clone mech, I understand it's a clone but it's all I can afford at the moment. When I first got it, worked perfect. Now it definitely has a huge voltage drop. I believe it might be in the switch. When I fire it, it takes a while to heat up, and when it does, it doesn't burn/vape/ hit as hard as it did. I haven't had it even a month. I am using the Sony VTC4. Any suggestions would be greatly appreciated.