Is there any harm in requesting the accommodation, even if I get denied? Will it appear on my score report? I definitely have a slight issue, but I don't know where they draw the line, and I'd hate to come across like I was trying to cheat the system.
FWIW, I don't think there's any harm in it. It seems to me that the only people that would think you were trying to game the system would be the good folks at LSAC, and they don't really have any pull on if you'll get into law school or not. Nonetheless, you should also know that when you get accommodated testing it does say that you had accommodations on your score report, so every school you apply to would know.