today i shot the first carbon arrow from my k mag. it was a beeman 400 ics. i tried to keep the nock point as my 2016s, the arrow flew nicely but 6-8 inches high and after about 12 shots the cock vane blew off the arrow. i then raised my nock point and the arrows were right on , but the nock point was very high the arrow looked odd at that angle on the bow but it flew nice. can anyone shed any light on this for me. the arrow is 30 in long inside nock to insert with a 125 gr field point.