Hi Marco, i'm Marco as well
Imho the tactict you're using against 4231 is wrong due to you're not creating numerical superiority in any field's side (except for DMC), and you're having a one-to-one man in defense.
Usually, when i'm stronger or equal of my opponent, i'm using a 41212 against 4231: in this way my defense is numerically greater then the opponent, and i have a TC without marking.
About tacticts, i can use Centre/Mix passes or Mix/Short passes either, depending on the MCs of my opponent.
Normal, No-Counterstrike, Low Press, normal tackle, zonal marking, yes-offiside the rest of tacticts