The way I do the chokes is to wrap the first layer completely then run the wire back through the cut grove of the bobbin cavity and wrap the second choke right on top of the first one. There is no breaks in the wire. The wire I use is already parallel bonded as to cut out any mistakes of trying to keep the wire joined together by hand when you can barly see the wire. If you take a real hard look at the VIC tansformer as a whole you will notice that there is only a primary and a secondary, the secondary has been broken up into small bobbin cavities. The top secondary is bifilar wond thus giving us the maxium capacitive reactance possible.
This is just an example of what is going on with bifilar windings:

Now the other part of the secondary windings now called "dual layered chokes" are also parallel bonded wire so the length of the wire is the same throughout but it is not hooked up back into itself as the first part of the three part secondary winding is it is placed on to two voltage potienal zones in the Gas Processor and in the WFC to a dielectric liquid with a low break down voltage between two voltage zones. Remember to get the magnetic fields to add up they have to be going in the same direction.

Hope that helps,

h2opower.