I have extracted the core.big file and oldships.big. I dont know what to do next ???, which of the build folders to edit, i have tried deleting the imperator from the "higaran" race which i think is the alliance but i still have the ability to build it.Please if you can explain exactly what i need to do to remove it from my and AI's build list.Your mod is excellent but i can't fully enjoy it without this little detail taken care of.