Bronko,
Where did you order the 2115s from? Easton no longer makes that size and that was the size I use to shoot in a 31" arrow. When Easton discontinued the 2115 size, I had to go to a 32", 2215 arrow because of the stiffer spine when I needed a heavier arrow for feral hogs. I'm now shooting 32", 2212s out of all three of my bows, but if I can find a few dozen 2115s, I like to shoot those again.