i have only played against it once in cup and used 3N-5-2 flat(which i hate using seeing i NEVER have MLs and MRs and used my AMLs and AMRs there) and i won by a fairly large margin and the second leg he changed tactics so i didn't have the pleasure of playing against it again.

4-5-1V might do the trick but i, personally, wouldn't use the 3n-1-3n-2w-1..