My system locale was Finnish anyway, but the UTF-8 trick worked... partially.
Now there's an unnecessary space bar after almost every Ä letter, but never for the first two or three of a text box for whatever reason.
I need to use the Ä and Ö letters in my translation, but they're displayed in-game as a jumbled mess, even though Courier New should certainly have those characters.
To put it simply, how do I fix this?