Have any of you found that when going to a higer volt pv, or going to LR cartos, you have had to lower your nic level in your juice? When I got a 5v mod, using a 3Ω carto, I had to drop the nic level from 18 to 15mg. I also went to 2Ω on my 3.7v's from a 2.5Ω carto, and I am feeling I need to now drop the nic level here.