No problem, Ben. :)

>"I actually did mean "in series" with the switch such that the resistor/switch pair is parallel to the other devices."

If you wire a large resistor and the C-switch in series from hot to ground, you won't hear much of an effect because the resistor decouples the capacitors from the hot signal wire. That's like a full-on tone pot.

The C-switch is intended to place a capacitor directly in parallel to the pickup, that is, between hot and ground. There *must not* be any resistor in series with the capacitor.

The 10M resistors are wired in parallel to each cap to enable discharging of a cap when it isn't used. The problem is the following: If you use the switch and have a certain cap active, there's an alternating voltage over the cap according to the signal waveform. If you now switch to another cap, there's a high probability that you don't do this when the voltage over the cap is zero. If you don't have a resistor in parallel, the remaining charge is stored. Next time you activate the cap, you'll hear a clicking because of the voltage jump that occurs.

So, in that sense, it is correct that the cap which is used is already in parallel to several resistors. The problem are the other caps which aren't used and store electrical charge.

Back to the load resistor: If you use the C-switch in addition to a normal tone pot, you don't need any extra resistor. The 10M resistors inside the switch are so large that they don't really change the overall resistive load. If you replace a tone pot, your pickups will only see the volume pot and the 10M from the switch (and the 1M input resistance of the amplifier). That's why you need an extra resistor the size of the old tone pot to maintain the load. The resistor must be wired between hot and ground. Of course, you don't have to use it. If you omit it, you'll get a higher resonant peak and a more characteristic sound.

But BLs usually have a high peak anyway, and it can easily get too high, so it's usually a good idea to compensate for the missing pot by using the resistor.

I hope that helps...BTW, I finished my PhD thesis yesterday in the evening. :) I have plans for putting some information about wiring stuff on a website, but I don't want to promise any details before I've done it. In the meantime, feel free to ask further questions.
Let the thunder roll and the lightning flash, I'm doing alright for country trash.