Ah, ok that would explain a bit about why you had a little trouble understanding the campaign tut.
But the good thing is with this sub if you take out most of the main escorts you can take out the merchants with ease with the deck guns.
If you ever wanted to try and edit any of the files for the game just create back ups of the originals and just go messing around. That's how I figured out how most of the files work. That's pretty much the way most people figure out how to mod games.