Text Editing capitalization problem (FireRed)

[YayMii]

So I'm doing a decapitalization hack for FireRed, and I have fixed the capitalization on most of the things I wanted to change. The only problem is a pluralization issue.

So I decapitalized the items, and there's an issue when Professor Oak gives the 5 Pokéballs. The game reads "[Player] put the Poké BallS in the Poké Balls Pocket", and I'm trying to decapitalize the S after "Poké Ball". The problem is, the text in the game's file reads "[PLAYER] put the \v[&H03] in the \v[&H04]." and the S isn't there, so I'm assuming that the S is somewhere else in the file and the game inserts it when it detects multiple items or something. Does anyone know how I can change that S to a lowercase S to match up with my other decapitalizations?

I'm using Advance Text BTW. If I need another tool, please let me know.