I used a 2 ohm carto on it with Vape Dude's Buttery Nipple and it worked fine. I couldn't go much past 5.5 watts before it tasted a bit burnt but that was ok. Last night I tried a 2 ohm carto with Vapor Chef's Strawberry VC Cake. Even at 4.5 watts, the lowest it would go, it tasted burnt. When I...