It has split at the nock end about 2cm. They cost me a lot of money from the US, so I am not happy. I have noticed that the nock is not glued. Could this cause a problem, maybe by slamming into the back of the arrow on impact?
It is my first day shooting them...

Any advice greatfully recieved... I bought these arrows, because they were supposed to be a stronger alternative to cedar. I did not mind spending 14 Euros if they were going to last twice as long...
To make matters worse, my cedar arrows shot better... even thought they are the incorrect spine...

Alex