Got 98 points last season with this tactic then all of a sudden the away form went to pot!! On the brink of rage-quitting FM14.2 again but I decided to test something that worked for me on older patches.
What you do is keep the basic outline and team instructions of the tactic but tweak it individually for each player.
By this I mean at the start of the season take the time to add each player into the tactic and set him to his best role (use your own tools/opinions or look at the coach report as I have done).
Like so (example of the 6 potential AMC players):
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After doing that it means when you sub a man on or off he automatically switches to his preferred role in whatever position he is now playing.
As such, the tactic looks a wee bit different (but team instructions and formation are the same all the time)
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I done this after another away defeat (Liverpool game)
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Hopefully it works for you all too.
But remember sometimes you just can't win (or as I put it, the game just wants you beat!). Including that great run above I had more victories including two 4-0s and a 3-0 then all of a sudden Fulham in a relegation place hammered me 4-1