Thanks David! This is great but unfortunately it doesn't fully solve the problem. If you look at the photos you' can see that in the roof section on the right (looking at front of house), the gable runs fully front to back (see in back of house pic). The gable roof on the left (running left to right) ties into the center of the gable roof section on the right. I can't seem to make that work. The roof will not generate a gable for that section even though I have selected gable on the front and back walls(?).