"I managed to find Wallace 's Well of the Auchinairn Road but would like to find the stone cross and plaque as displayed on the internet site"
You are not meant to find it.
Nor are you meant to find the recently erected Cairn by the 1820 Society to the Battle of Bonnymuir. There are no road signs to that neither.
The National Trust won't be satisfied till they have completely expunged, as well as sanitised, our historic sites. They have already rewritten them all.
As for our joke of a tourist industry. that is another well kept secret. They only want tourists to fly via constipated London with BA Union Jacks on their tails.
We have Robin Hood Airport in Nottingham to a fictional hero. Why not rename Glasgow Airport to William Wallace Airport, next to Wallace's birthplace at Elderslie, where the local Labour Cooncil deliberately destroyed Wallace's House in the mid 60's?
Why not rename Prestwick Airport to Robert Burns' Airport, and so on, before BA shuts Scotland down completely?
I remember reading about Cardinal Winning getting his red hat. He phoned home, from Rome, to tell his family what he was wearing on his heaid. They telt him to get aff the line, as they were busy watching Celtic in a cup final penalty shoot out with Raith Rovers.