Howdy j-bird,
The list of Texas SASS clubs below shows that there are several located in your area in Mansfield, Denton and Greenville.
Why not shoot the contact persons an email [or phone call] to see if they can rustle up the names of some local "Lone Star" cowboy gunsmiths for you?
Good luck!
http://www.sassnet.com/clubs/Clubs_list.php?state=Texas
This Texas cowboy gunsmith has a national reputation:
http://www.ravensroostcustom.com/601.html