I find the thinner rope works better in my Cobra. I have it wrapped in a thin layer of mesh. I make my cable touch the bottom of the tank so I don't worry about it moving around. Once the coil is wrapped and secured the rope is very stable. For the first time ever I am able to vape the cobra with all the fill hole screws in.
I have a original cobra and I have 3/32 wire rope but its very snug fit , would a 1/16 rope wick better ? and if it does wick better do I need to worry about it moving a lot ?