Wow, battery acid? That is nuts. It isn't like I stored it anywhere with temp changes or anything. Just in the closet. The thing is, the ring on the maul saber is only a cm wide and the wd40 (area) that it can get to is pretty tight. Not sure if the lube can make its way into the screw area through that 1mm thick slot. I'll try some wd40 tonight then. I was afraid to spray that on it, but now, it might be my only chance to get into it again.