So I though this was going to be the holly grail., made sure to buy original Vivi's. It did start out that way using a 1.8 head on my Kgo passthru with Ice/Ice juice from Vape Dudes,. However half way thru the first tank a nasty burt plastic taste started. I took it apart, cleaned, dry burned, refilled and let it sit for over an hour. But that same after tast is still there. My ego vision clearo's have much better taste. Any suggestions?