Like Monte said, roller bearing up front and problem solved.

What we do that helps a great deal before going to a roller is use a half groove thrust bearing. Champher the inside parting relief on both sides of the upper grooved shell, but only on the thrust side. You then have two pressure feeds of oil on the face of the thrust. the size of the champher determines how much oil you get. Don't get carried away a little goes along way to keeping that area cool. Also open the thrust up to at least .008.