Against 4-1-3n-2, I use either 3n-5-2 flat, 3n-1-4-2 or 3n-5-2 V-style.

Your 3 dc's negate his 2 ST's. You don't need DL/DR, since he doesn't have any offensive threat on the flanks. The combination of 3 DMC/MC creates resistance for his 3 MC's. The wingers allow you to bypass his DMC, rendering that player useless.