Here's a new tidbit to think about.

If you have the coils in the VIC opposing each other, what is the total inductance going to be? For example, let's say choke L1 is 1.2H and the secondary on the same core is 1.4H and they are wired to oppose each other. Their net inductance will be less than the two of them. For me, although just subtracting the lesser from the greater didn't result in the actual inductance so I am assuming there is another factor involved such as mutual inductance. At any rate, let's say that the net difference leaves us with 200mH.

200mH doesn't match up with a 1nF capacitor to give a frequency of let's say 5kHz. So, the final choke, L2 needs to make up for the difference. We need a total of 1.1H to make resonance at 5kHz. So, L2 in this example would need to be 900mH to achieve proper resonance in this circuit.