I get gurgling in clearos and perfect saturation in cartotanks. Hmmmm.yea, the draw goes hand in hand with any negative pressure tank setup, and most tank setups are exactly that and are very dependent on the draw and very affected by differences in how one draws on it and this is also heavily affected by the power level your vaping at. draw helps bring fluid in, power to the coil takes fluid out, it's all a matter of balance to get everything right to get the right balance of not dry and not flooded.
it's a lot easier to get flooding and gurgling or to get dry and burnt than it is to get perfect saturation and actually stay there in that perfectly saturated zone as you take fluid in and vape fluid out... the vape is only at it's best in this central perfectly saturated but not flooded state
Guess I'll give all my bottom coil stuff away.
Problem solved (not that I was actually having a problem or anything....lol)