I was a die-hard Ekowool user for years using kayfun tanks until I got my Gems and tried cotton. I tried cotton with the older Kayfuns but always went back to the Ekowool.Ricks, I use Japanese cotton in mine and I do a tight/snug wick in a 3mm ID coil. I am running at 0.94 ohm and about 15-16 watts. Nice warm vape. I do trim some of the wick side edges after cutting the length to just hit the bottom of the deck when it is in place. Wicking a 3mm coil is a fair amount of cotton, but I want it tight in the coil to reduce popping...BUT I don't want so much cotton on the tails to block airflow in that little chamber so I trim the edges a bit.
I continued with the cotton in my KM3's and I think I need more cotton in mine. I will try it now, thanks DP2Raja