Bill; Best thing I have found to do when adding anything to a tube, is to roll the tube in a piece of paper and mark the joint. Trim the paper a little larger than the mark and using a straight edge and stanley knife trim to an exact fit with no gaps or overlaps !! Mark your paper with pen kit name and size tube. If I am working with snake skins or some patterned papers where I want to see what my design will look like, I will make the template out of clear plastic in order to get the best features of the materials I am using. Plastic template also makes for easy and exact cutting. Don't worry about exact length, cut it long and trim after glue has dried. Works well for me. Jim S
