i got my new am 32 bone collector set up yesterday. i am shooting 324 fps with a 350 grain arrow. i have a buddy of mine that is shooting 323 with a heavier arrow and shooting an inch high at 20 he is still dead on at 40 yards. i shot today at 20 about an inch and a half high, at 40 yards i was 3-4 inches low. this should not be, my buddy that was shooting with me is shooting 14 fps slower than me with a 375 grain arrow and is hitting the same spot at 40 as me. please let me know what i should do. i was hoping to be shooting 0-40.