{12} We review factual findings of Workers' Compensation Administration judges under a whole record standard of review. Moya v. City of Albuquerque, 2008-NMSC-004, ΒΆ 6, 143 N.M. 258, 175 P.3d 926. "On appeal, to determine whether a challenged finding is supported by substantial evidence, we have always given deference to the fact finder, even when we apply, as here, whole record review."