Right was wrong, so left must be right. The Mets are taking that approach with Lucas Duda this spring, after a failed right-field experiment last season left both the player and organization wondering if there was a remaining fit between the two. “That was a long process, and obviously it didn’t turn out too well,” Duda said yesterday, referring to the 3 1/2 months he spent playing right field for the Mets last year. “But I think it’s going to turn out a lot better for me now that I’m playing left field.” Duda, a natural first baseman, played left field on a part-time basis at Southern Cal and in the minor leagues before the Mets installed him there last September, upon his return from Triple-A Buffalo. The comfort level of playing a more familiar position, the Mets hope, will allow Duda to rebound from a disappointing 2012 season in which he hit just .239 with 15 homers and 57 RBIs in 401 at-bats. Other than changing sides of the outfield, maybe the only difference Duda will take in his approach is playing deeper. Last year, Mets outfield coach Tom Goodwin had Duda play mostly a shallow right field with the idea of stealing potential bloop singles from righty hitters. It was a concept foreign to Duda, who had grown up instilled with the principle of letting the ball drop in front of you, but not behind. Goodwin wants Duda playing deeper in left because the majority of hitters are righties and more likely to pull the ball. “Left field, with a little left-hander batting, I’m going to bring [Duda] in,” Goodwin said. “But he probably won’t be too shallow the majority of the time.”