So I've been using an Aerotank Mega on an MVP 2.0. I'm using the 1.8ohm coil. I'm also using a 50/50 juice. The issue that I'm having is that I can't push this coil beyond 7 watts without getting this metalic maichine shop taste. I'm serious anything above 7 watts tastes pretty bad. I'm on the second coil that came with the tank and I have only tried one juice with this setup (Cool Berry from Mountain Oak which is superb IMO). What is the likely culprit for not being able to drive at least 10watts for better clouds? Is it the nature of this juice? Could the stock coils be subpar in comparison to the replacement coils? What's the deal?