I have found because the F9's automatically adjust tot he D-Line you don't need to switch up. It's on control so it should be holding onto control of the game. Parking the bus on fm just means lettign an opponent swarm you. Not a good idea on this ME as they will score.
Thanks
By the way I dunno why but I get better results on your 442, even instant resulting, creating more CCC too. Even got an astonishing 7-1 instant result against a team that has 1500 more rep than mine.