Brian, the TN,s are documented in the johnson red service manual . you may want to consult it if you don’t have a copy of the manual
go to MEMBERS ONLY tab….then INNER SANCTUM tab…. go down to library..find Garry Spencer’s drop box
open it …go down and find the RED BOOK and save (download) iit in a PDF file print it if need be
Joining AOMCI has priviledges 🙂
