I made a segmented blank for the Cosmopolitan kit from penn state. After glueing in my tubes, I had a significant amount of the blank on one side. So, I marked and went to trim it off. Apparently, I am crappy at marking and I hit the tube. I was hand sawing so I didn’t go very far through the tube. It is about a millimeter of the tube is missing on a small section. I am not sure what to do. Suggestion would be appreciated.