First I feel a bit silly giving any advice, especially someone at your lvl. It sounds very, very familiar. Perhaps you focus too much on tactics or formations in the way you'ld do in real football. I have changed my formation in halftime from 4-1-3W-2 into 2W-2W-2W-2W-2W and the results weren't even close to what you'ld expect. In my case nothing worked as far as your MC's concerns, no matter how many MC's I bought, none would perform and with that the team. Perhaps the solution is as simple as, don't use MC's, or use only one, better 1 player with a bad form then 2. Perhaps a 3W midfield with a dmc/amc.