The Montana Supreme Court has suggested that less deference is owed to agency interpretations that are "inconsistent or recent." Pennaco Energy, Inc. v. Mont. Bd. of Envt'l Review, 2008 MT 425, ¶ 25, 347 Mont. 415, 199 P.3d 191. However, in Pennaco, the Montana Supreme Court was not persuaded that the agency's decision "should be afforded decreased deference by virtue of the fact that it [was] a reversal of an earlier decision." Pennaco, ¶ 39.