Since I don't have enough posts to post in the Dev. forums I would like to thank mr Robinson here for the excellent tutorial and necessary files to root my S3 stock. Thanks man you are exceptioal.
FYI: I rooted over a previous CWM root with no issues. Used an old charge/data cable from my previous Palm Pre+ which worked fine. The firmware is now listed as Official not Custom and the flash counter has gone from 3 to 2.