A new helmet liner? (MUST KNOW :D)

At the moment im using a WW2 helmet liner for my MICH helmet and well... my new helmet cover wont go over the pieces of liner sticking out where can i buy a new MICH liner? (mine isn't replica I bought the liner a long time ago and 5 years ago bought the MICH outer peice and put em together ) or should i just spend 30 bucks on a MICH replica and a new cover?

When in doubt, hit up a surplus store.