Lehtera will move to the Blues' third line Tuesday against Dallas and be between wingers Patrick Berglund and Dmitri Jaskin, reports Jeremy Rutherford of the St. Louis Post-Dispatch.While coach Ken Hitchcock characterized the move as "an experiment" this hurts Lehtera's potential output. His production had slowed recently (he has just five points since January 1) and no longer having Jaden Schwartz and Vladimir Tarasenko will make it tougher to produce points. Downgrade him in your lineup accordingly.