So I've been using dual coils on my Igo for quite some time and I can't seem to find the right balance. Right after the build one coil will glow just slightly less than the other. It's fine at first but within a day or two I start noticing that when I go to drip, one wick will still have a good amount of juice on it while the other is close to dry. I can mess with the offending coil to make it work for a little bit, but it's constant maintenance after that. Any advice?