ifyou have a mechanical release try that and see if they still Kick left....
if they dont your Finger release has something to do with it....
also make sure you are drawing the string strait back

make sure you have good form first and are grouping...likeDC said...
then if your arrows still kick left but are on spot im pretty sureyour arrowsare underspined then.

also have someone that knows a little about shooting watch and listen (your form and arrow flight)while you shoot...if you do this you will getthe problemwhoopedin no time...having someone watch helps a bunch when you are having troubles shooting...just have him/her give you some feedback after every shot.