Looks nice, Mud. Looks like you may have already found the CCS diagram. If not, drop me a note. I ran my own homebrew octal Cornet for a few years before replacing cathode resistors and I liked the results. Painless mod and as CCS often does, tightened up the bass. Also, I've spent a few years sorting 6SL7s to find strong, non-microphonic tubes that will work in that first position without howling. Let me know if you need any of those, too.