I recently got back into bowhunting after several years out. So many in fact, Carbon arrows are new to me. I bought a complete used set up that has Easton Carbon Storm arrows. I noticed several arrows were not fletched correct to the nock (3@120 degrees with the single color facing to the left). At first I thought it was because of the whisker biscuit, but after cleaning some old fletching for new, I realized the nocks were not glued! Is this correct or should they be glued?