Baldur's Gate TOS (3 Disc) and Class restrictions?

[GregSwifthands]

I couldn't find a similar topic probably because this isn't a common thing asked. But is there a way to re-enable the Class/Multi-class restrictions when you play through GemRB. I've noticed suddenly any Demihuman can be a Cleric/Thief, or almost all of the Multi-classes (Till dwarf which then only gets Cleric/Thief enabled.) But I want to play as close as possible to Vanilla BG1 + Tales of the Sword Coast.

 

tl;dr is there a way to re-enable the class restrictions?

[lynx]

this can be changed in gemrb/unhardcoded/bg1/classes.2da (plaintext; last few columns). If you fix the list to look like in the original, please let me know, so it can be updated for everyone.