I have a simply hip roof. I change one small wall to a gable wall and the overhang on one side no longer matches the other. I have the default overhang set to 18". I check each wall and they are all set to 18", but when I change the one wall from hip to gable, it changes the overhang on one side to 27" and it hangs lower than the other side. I'm attaching a screen shot showing the difference.