TGC mod needs IWTE tool experts to make some modifications.
1st: In TGC's timeframe there were no castles. So we have permanent stone forts that we need to use existing cities or large_towns battle models instead to show the urban centers in the world that period.
2nd We need minor midifications on city wall towers without roofs but open with rambats like castles have.
Please if anyone can help us contact me here or in TWC forums.