First time user, still learning many things. I have a 1 1/2 story house I am modeling. It has two full gable roofs at right angles. I created the main one, then the second. Auto roof would not produce the entire roof like this. Was not familiar with merging these two manual roofs, so manually removed the main roof section under the second roof intersection- it's an attic room I will be making into a master closet. As a result, I'm left with a number of faintly outlined capital X marks- see attached picture. I believe these to be artifacts from when I was trying to get the two roofs to intersect, but I would like to get rid of them, at least turn them off. How can I do this? I have watched the roof tutorials and searched the forum and help, but I can't find anything.