OK, I just thought I'd give an update. I have been playing around with this circuit this evening, and I am glad to report that the circuit as built, seems to be doing a lot of the things that it did originally. It is going to take me a good while to get it all documented. Right now,it seems to really help to have single coils, and be on the neck pick up, where weirdness usually happens anyway on most effects. I'd guess, because this is where you get the maximum string vibration. This circuit is super finicky on where things are adjusted, and your pick attack. What it seems to be doing, is going into oscillations after the original not has started to decay. To get some of these effects, a couple of the pots have to be turned completely off, and the guitars tone controls have to be just right. It's going to be a cool effect, if it's something you want to deal with. I know there are adjustment sets, that once you're in them, will give you several different effects, just by adjusting the guitar volume, or your pick attack. The main thing is, that I've found at least some of the down octave echos and other weirdness I thought were gone forever. This thing has such a wicked square wave and mosquito fuzz, that it wouldn't break my heart, if this was all it did. It does have great sustain, but that has to be adjusted for too, or it gates out. I'm back to having joy again with this thing. I'll keep you updated as I make headway.