I have faced the same opponents tactic - 4-3-1-2 and i used 3-1-4-2 but i failed 1:3 at home... I have another opponent today with the same tactic i will try ND sheme cuz cant use 4-5-1 and will see if will be right one

P. S. tommorow is my 2nd leg agains the opponent beated me 1:3 at home and i must do a miracle to go to the cup finals....