I hear you Ed. Unfortunately it's the most accurate currently available. That is besides Boyd's
I wish I had a better answer.
Didn't one get published after the second coming of the signs, the official official ones, after the meetings? I have a map that was part of the presentation, see link, from the stakeholder meeting that shows the location of the signs. Is this what is now referred to as the '1997 topo'Is there a map marked with where those signs are?