That entry 817 is a layout. There is a schematic on that page in 805 and it has the add-on circuit. So you have the Black Forest, the Black Forest No Return with the added output stsge, and the Blacker Forest. The Screaming Eagle is something else altogether, right?
For whatever reason, I enthusiastically put "Blacker Forest" on my build list. I thought I kept a link for that somewhere. I hate to ask an author for the Cliff Notes version, but could you give me a "JOK3RX for Dummies" rundown of these above schematics and what you think of them? Is this a project that has branched off into a few successful projects, or has this (to you, not neccesarily to our collective) evolved into one Final?
Thanks for these awesome designs, bro!