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add_filter( 'pods_meta_default_box_title', 'slug_pods_metabox_title' );

        function slug_pods_metabox_title( $title ) {
            if ( get_post_type() == 'services' ) : {
                $title = __( 'Service Details', 'pods' );
                return $title;
            } elseif ( get_post_type() == 'project' ) : {
                $title = __( 'Project Details', 'pods' );
                return $title;
            } else : {
                $title = __( 'More Fields', 'pods' );
                return $title;
            }
            endif;
        }