Hi Scott, Yeh, that chartpak can be frustrating. Even painting on a model, it leaves its adhesive in the lines. What we used to do was to get the plug in final primer and then apply the tape. Then we took an airbrush of thinned primer and went over the tape only. You must do this several times to build up the line. Pull the tape, sand with 400 grit, then paint your black. Sounds like a lot of work, but remember you only have to do it once. Good luck. Bill Harris