The Walker cup was won only once by a non "open" person, is that right?
Non Open Class Walker Cup National Stunt Champions:
46, 47, 48: Davey Slagle, Jr.
51: Don Ferguson, Sr
52: George Aldrich, Sr
54: Hill Hutchins, Sr
56: Bill Cummings, Sr
58: Arthur Pawloski, Sr
59: Bill Werwage, Sr
62: Gerry Cipra, Jr
72: Dennis Adamisin, Sr
As Dennis mentioned, there have been other challengers to the Open winner over the years.
Keith