I guess I don't understand which roof pitch to change. I have tried so many of the walls (to change pitch) and nothing ever seems to change. I have tried to draw the porch but how do I do that, ad the extra overhang on the front walls (I already tried that)? And I don't know how to eliminate the the additional gable that gets created by the garage & house roofs to create one roof so to say in order to make the porch.