when i was shooting 50# i was using 1916 eastons at 29". later went up to 2018 just for the weight. i use yellowbraided anchor rope you get at wal-mart or any hardware store. cut it to 26" and pull it through the shaft with a needle and thread. this helped my 1916 gain a little bit of weight and also quieted them and the bow down. good luck and hope you had a nice holiday