It looks like for the small font, the 10 width (2 hex bytes) : and ! instead of the 5 width (1 hex byte). Easy enough fix, plus you can get more letters inserted.
As for the game info text, is there a reason why there is no : after released? Also, why can't we have the year, so the release date being "MM/DD/YYYY"? I played about with the rom to see if I could make it better. Putting the maker text to the far right looks quite nice.
Left image = Original
Right Image = Modified
Just some tiny errors:
The one on the left, you need to put some spaces between the &, so it becomes: Faim & Ainon
Speaking of those names, they look foreign and mean nothing to mean. Is it a pun for something? I'm aware you're trying to stick to the original, and that is fine, but something like "Flame" would be better (and something done back in the old days when old games got translated).
The one in the middle, the second line:
stage mid-boss "Afro Karate Boxer" !
You got carried away with the spaces. Should be:
stage mid-boss "Afro Karate Boxer"!
The last line:
him down! I wonder why he never kicks…
Should be:
him down! I wonder why he never kicks...
The third one, there is a unnecessary space on the third line, before "Mutekiken". Looking at it, should it just be: "Go Kengo"?
Also, one of the machines is mentioned as "GameCom" or sometimes as "Gamecom". Which one is it meant to be?
I think that is all my error pointing.