Hi I'm new here so first off I'd like to say hello, I've been vaping for around a year, mixing my own liquids, rebuilding atties etc but only recently got into mods. So I've just bought an svd, had it 2 weeks, very happy with it but it makes a buzzing sound from the fire button. Sounds like a tattoo artists gun. I'm not getting a shock or anything, and there's not any strange behaviour as far as functionality, but I'm just wondering if I should be concerned. It happens on all my tanks and clearos. I'm in 18650 mode, using aw imr, 2.0 ohm at 8 watts. Any help would be great, thanks 