You want cotton to fill coil. You want a little tension/when you pull it back and forth..
Too little, you'll see a lot of bubbling in between wick and coil. Too much, you'll get what look like shoulders on either side of the coil..if this is happening, you'll almost be warping the coil forcing that wick in the coil.
Too little, you'll see a lot of bubbling in between wick and coil. Too much, you'll get what look like shoulders on either side of the coil..if this is happening, you'll almost be warping the coil forcing that wick in the coil.