Kali,
I tested the different coil lay outs before and after I saw the Stans coils.I'm always trying different ways with my set up trying to find the best outcome.Sometimes I don't have my notes handy when hooking up the coils,so I just play around.Gut when I do get them to put out the highest voltage,it always comes out to Stans arrangement.But if I change something in the circuit,like bifiller choke coils verses single coils,it may need a different setup.Sometimes I'll try two diodes,or no step up transformer coils,and other things.
So I don't always test with that one coil arrangement.
In my testing of resonance,I found that resonance was only happening with the positive choke and the cell.If I disconnect the negative choke ,resonance frequency wouldn't change.If I added a capacitor to the top choke,the resonance frequency would change,but if I added it to the negative choke it wouldn't change the frequency for resonance.If I added a capacitor to the cell, resonance frequency would change.
So from my test,resonance is between the positive choke and the cell.
Don