~make sure you are not slapping the trigger...
~make sure you are not holding the string too tight to your face & you ancor in the same place everytime...
~hold the bow w/ a loose gripon the rear of your palm were your wrist and hand beginto reducetorque of your wrist...

if this doesn't help i would check to see if you have mechanical problems such as string creep, fletching contact, rest malfunction...
good luck dude!