After looking at how clean and beautiful the rudder was, I had second thoughts about the build-up rudder. I though about if for a few more seconds and then the 2 or so ounces in weight savings came to mind. The exacto knife took the rudder off with one cut. I carved the fuselage sides back to the balsa vertical piece and then sanded it straight with a block and some 80 grit sandpaper. Pictures so the remains and the new tailpost.