I am trying to merge the roof of my home with that of an attached garage that is a bit offset with the home. Inexplicable things are going on where the two roof lines meet. See the attached images. The shared wall is specified as a full gable wall. I have tried changing the overhang length on the shared wall, but that does not help. I have played with the roof pitch and roof type designations, and butting up a dummy wall with different specifications to the shared wall, all to no avail. I have been beating my head against this particular wall on and off for days. Any constructive input would be appreciated. Thanks!