Not sure if this is the right forum but here goes. I have 2 tanks a herkales plus and crown. Both spitback slightly on me (but annoying enough) particularly on one mod. My VF Classic. At the same wattage on my Vtc mini the spitback stops. Same juice, same tank, same wattage, I could switch from one to other and the VF Classic gives me the Spit back... The other doesn't. Anyone know why? It's driving me nuts I really like the mod but haven't been using at all cause I can't stand juice in my mouth