I am so happy you got rid of the "funk". That is really strange. I wonder what that was? I guess we will never know. You should complain to the vendor. Maybe they will have a talk with the manufacturer, and get that straightened out.
Well the dual coils on the Aqua 2 have been a challenge for me. I am having to wick it differently, and nothing I've done so far has worked well. I can chain vape at 7.9 watts, with a 1.2 ohm coil. Anything above that, and I get dry hits. I like the Aqua2, but it is a lot of trouble for me. You have to be precise, or it just doesn't work out well. I had both coils doing the same, then one changed a little. Took wicks out, played with the coil, and got them firing at same time again. The screw had also come slightly loose. It was tight, but not too tight when I built it initially. The dual coil set up is not doing much for me at this point. 3.2 volts is what it is showing for 8.2 watts. If I want to chain vape, I have to go back to 7.9 watts. That is not a satisfying vape. If I don't get the wicking right soon, I think I will just go back to a single coil, and lower the ohms.