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Headband 4th Floor
It'd be best if you were completely sure before editing it. When you are, that would be the thing to do. Possibly a note about the third floor being short in that case, too.
I was half-hoping someone could confirm whether it was true or not when I made the post. I don't think I'll be poking my head in that dungeon again any time soon (Headbands don't always drop x.x), but if/when I do, I'll try to get several runs in and confirm whether it is or isn't myself.