Imeo I have few questions:
Why did you drop the idea of having 2 holes of air in center post?
Which dual coil setup you think its best x or parallel?
When using dual coil the x way, basic feeding cannot feed both coils at the same time if it is move to one channel. It will feed 2 wicks of the same coil right?
Great questions aal
1. 2 and 4 holes didnt work well for a simple reason. The air couldnt come with the nessesary speed to hit the coil because it was whipsawed, so it had much less strenght
2. Both coils works exellent if you make them in the right way. And the right way is to close the gap between the 2 coils when they are parallel. When they are in X style you dont need to do anything.
3. You are absolutely right on this. So you just put basic feeding to both channels
