Replying immediately, because I think that you may get the result you want right away by using the monospace numerals from japanese without any problems (０１２３...)
Oh! Hey, you're right. That does solve it. But yeah, it's worth solving for the other characters too.
The text in the first post is what I got from my translator, but I don't know if the half-width numerals were a stylistic choice or just an error (I'll ask him).