I sat my RT Practical a few months ago with the guy you mention from East Fortune. He's actually an ATCO from Edinburgh.
He was very good and very fair!
I think he may be your only option at the moment. I understand that the only other examiner who covered Central Scotland is still recovering after an accident.
With regard to study, The Safety Sense leaflet on RT has all the info. you'll require for the practical exam.
Good luck
Edit: Here's a link to the SS leaflet
http://www.caa.co.uk/publications/pu...ls.asp?id=1176