[High/Deaf]

I've only tried it in the first position of my chain - it seems Fuzzes like high-impedance inputs - so that might limit where it can go. It won't hurt to try other arrangements, but I'm so impressed with the Mercury so far that I know I'd be more than happy to keep it where it is.

A light just came on in my head!

I've never been a fuzz kinda guy. I've tried a few times and they just haven't worked for me. Maybe this is why. I've never tested them regularly in the front of the chain (seeing a high impedance source). You may be on to something. I still have a couple of fuzzes sitting around. I guess I've got some testin' (and perhaps some buyin') to do. Bugger, eh?