Yes there was an island I went to and tried to work through some of the missions at but quickly gave up as so often I was killed by underground insect. They were too hard to hit even when they were above ground even. Seemed MA put no extra reward to these mobs for the fact that they were so hard to hit too which seemed daft. Thanks for the info on the feffoid trader. Shame it wasn't more exciting than ammo but it's still a nice example of the care/love that used to be in the game (and as you say, a different stack size can make a difference to smaller players) to add these little bits of depth to the world.