KOTR2 Trying to replace pfhc05 & po_pfch05

[MisterAndersen]

I've extracted all three pfhc05 textures and made my alterations, created the three po_pfhc05 files at 128x128, saved them all as 32 bit .tgas, and put them in my override folder, but they're not showing up ingame. So what step am I missing?