If you scroll down you'll see the board right below the 6DJ8 board. Mind you, the 6DJ8 board is a big improvement over the stock Dynaco board in and of itself. Roy really knows his electronics, but he doesn't seem to me to be the tinkerer that Don Sachsis. Don has been modifying primarily Citation and McIntosh gear for decades now.
http://tubes4hifi.com/ST70.htm