Haha I did find that file and I did unlock the .exe! I meant the actual program itself asking what models to use. Hopefully I'm responding in time to catch you. I do really want to finish the game but unfortunately am a bit dense I suppose lmao.
NEVER MIND I GOT IT (but now I'm stuck on what to do after getting it 😖 I don't want to say anything too explicitly here to avoid spoilers for others lmao)
AHA I GOT IT. So I only just realized how I'm supposed to be interacting with the .trts which also lead me to using the .stp files. Once I unlocked hide things happened where they weren't happening before. Super sick. Love the ending. Just a really awesome game man. I played more of this game than most of the other games I've played combined lol.