I like playing with Custom settings (Medium is too easy, Hard is too hard (at this point, I'll get better!

)), so I pick Medium when starting a new campaign and then, before actually starting my first patrol, go to Options and add a few ticks to make it harder than default Medium.
The problem is that they don't seem to "take." The reason I know this is that one of the ones I add to default Medium is to get rid of the silly green projectile path for the deck gun, yet every time I man the thing, I get the projectile path anyway.
So now I'm wondering if any of my other changes are taking.
What am I doing wrong?
[UPDATE: Or maybe I'm wrong. I checked the config file in the Documents folder and all of the realism settings there are exactly as I wanted them. Maybe that projectile path appearing in spite of me turning it off is just a bug? If so, it really doesn't matter. I was mainly worried that the other settings weren't enabled either.]