I have a great new tip for removing glue on carbons. Using a knife can get tricky as its easy to gouge the carbon. I still remove the fletching with a knife, then I slide a 8" piece of 2314 alum shaft over the carbon arrow. grab the alum shaft and rub the cut end into the glue residue. The sharp cut edges of the alum scrape up the glue and it is imposible to really gouge the carbon.