I've come across 3 Mirelurks stuck trying to kill a Deathclaw (I'm using Mart's Mutant Mod if you're wondering how this encounter happened) close to the Tepid Sewers. I quick saved near the Anchorage Memorial, found them by coincidence and decided to kill the Mirelurks first when I noticed I wasn't doing any damage at all to the swimming buggers, I used V.A.T.S. and just then did the bullets penetrated that barrier. Has anyone ever had this problem or is it just this location? Fallout 3 - 1.7.0.3