I've just bought the new Aspire Nautilus GT Kit and have found that it leaks from the bottom. I can see this when I remove the tank and see a pool of liquid has collected on the surfaces between the mod and tank. This will then run down the outside of the mod onto my hands. I've read that a possible cause of this is leakage through the coil and that putting an extra O ring on the coil would solve this. I was using the mod set at 18W, below the recommended minimum of 20W and that increasing the watts might help. Any other ideas?