I have been building on the wotofo serpent for a few months now and I really like the RTA I must say. I'm using 23 gauge kanthal firing at 0.3 ohms, flavour and vapour are both great. Only thing is I do get a bit of a pop and crackle when I fire it up from time to time, this makes no effect on the flavour or vapour but I just wondered if there was a way to eliminate this or does is just happen to everyone? This is the first rebuildable I have used so it's a bit of a new thing to me! Thanks in advance.