Ah ha I did wonder if that's where I was going wrong thank you. I think my problem was because I was told my 20w mod couldn't facilitate a sub ohm tank I assumed that by getting a 40w mod, I needed it to be as just as high during vaping ( if that makes sense) you live you learn eh!
Just to clarify what's the rule of the thumb with watts and resistance settings and what difference will the soft-standard-power settings make and when should I use each setting ?
There are lots of variables so like
Perpetua says it's best to start at a low setting and gradually bump the wattage up until you find a spot that feels right for that coil in that tank.
If you start too low the worst you are going to do is end up flooding the coil with too much liquid in which case just cover the air holes with some tissue and blow hard down the drip tip to clear the excess juice.
If you start too high you're going to burn the wick and the coil is ruined.
The soft, standard and hard settings will affect the ramp up time or how long the coil takes to heat the liquid to the point you want.
Kind of like when you switch a kettle on the water doesn't boil instantly even though you have the same amount of power/heat going through the element when you switch it on as when it's finally boiling.
Some people like the coil/liquid to reach the peak quicker so they will use the hard setting which will deliver extra power for the first second when you press the fire button to heat the coil/liquid faster.
Say for example you have your device set at 30W on the hard setting it will actually fire at 40W for 1 second and then automatically drop to 30W.
The soft setting will do the opposite if you like the coil to heat up slowly, it will deliver 20W for 1 second and the automatically increase to 30W.
The standard setting will just deliver 30W from beginning to end.