Well, the moment of truth has come at last. I found my HD in the mailbox this afternoon and spent several hours installing it. It wouldn't have taken so long, but I mistook interference for grounding issues and spent all of that time trying to correct a problem that didn't exist. Oh, and I removed the tone pots. The darkness of the HD actually works quite nicely to tame some highs. I'm still making adjustments, so the sound isn't as fantastic as it should be yet, but it's getting there. I ended up wiring the split to the five-way, since I couldn't find a DPDT switch (the push-pull that I bought turned out to be too long to fit the cavity :shock:). I'll include pictures.