How about just add armor no changing everithing.To quote you " Don't worry I've come across this as well, I didn't realise that some of the dialog files were used in other parts of the game. I'll fix this when i get some time".Nothing is fixed. Xarga is still broken in during the Dxun Sith Tomb quest.
https://www.nexusmods.com/kotor2/mods/356
I using this mod with yours bu can you add tribal on all heads male and female https://www.nexusmods.com/kotor/mods/5/?tab=description&navtag=http%3A%2F%2Fwww.nexusmods.com%2Fkotor%2Fajax%2Fmoddescription%2F%3Fid%3D5%26preview%3D1
https://www.gamefront.com/games/knights-of-the-old-republic-ii/file/twilek-pc-head