I eventually got around to making up this schematic;
http://members.optusnet.com.au/~jethro.dog/mypic110.jpg
As you can see, it's more-or-less a fuzzface with 2 extra transistors doing some piggybacking. After a few weeks playing a Miss Piggy it still sounds fantastic.
Thank you Brett, that makes everything clear.
Are you going to keep it up there? Otherwise, I would be glad to host it.