I am shooting a 31" carbon arrow with 4" feathers through a NAP pro 2000 rest. A friend & I were shooting the other day and he noticed that my feathers we messed up a little after I shot the arrow.

At first we thought I was hitting my riser a little but it was not always the same feather that was messed up. I had paper tuned the arrows and I still have really good groups.

Any idea what this could be??