I believe that is too strong of a spine. Weak would curve around the bow when released. Now I just looked at the Easton chart (which reads too stiff I think) and it says u have the right arrow. Your arrow is a 376 spine which sounds way too stiff(to me) for your setup. I am shooting a 57# @ 27.5 recurve, 29" shaft, 75 gr insert and 105 gr point. My Axis arrows are only 400 spine, weaker than yours. A friend recommended the spine for me and it was a little weaker than what the chart said to use. However, my arrows fly great. Maybe its not your spine? Good luck.