Love the write up and I plan on playing with 4 fletching in the off season. Do you do any spine indexing prior to building? I haven’t yet, but may try with the next batch I build. Basically cutting to length and installing insert and nocks. Then, with a tuner bow, shoot each one through paper. Any shafts that don’t give the perfect bullet hole get pulled aside. Then rotate the nock 90 degrees and shoot again to see if you can get the bullet hole. If any can’t achieve it, they get culled from the batch. Is this worth the effort for hunting applications or is this overkill?