Luke, There is a simple fix for this. Even without the wrap and a worse split, in lots of cases they can be fixed. What I have done is to grind down the bad area at a long angle, do the same on another piece of shaft, glue them together. After everything has set up, make another self nock and rewrap with thread and set in glue. I make mostly hardwood shoot arrows and put a lot of time in them just to throw them away when I'm lucky enough to break a nock but even on the cedars I used to make this method has worked very well. Pat