I’ve been running the Nexus Core advanced solo for about a week now.  It seems to be the zone that drops weapons, among other items of course.  What I’ve been trying to acquire is a sword or great sword upgrade of some kind.  As per my typical luck, or lack there of, I’ve been cursed with bow after bow after bow.  It’s actually kind of hilarious at this point.  I don’t even look at the loot chest anymore since it’s been a bow of some kind so often.  I’ll be in complete shock when a sword actually does drop.  For now, I’m at 7 bows and 3 hammers.