The specific carbon arrow should be matched to your draw weight AND draw length. OR you can get too heavy or too light of an arrow shaft. too heavy and you lose energy trying to push the arrow...if the draw weight is too heavy and the arrow too light it will flex too much and throw your accuracy off!

I think you are shooting a way too heavy arrow. Measure your arrow length from end of the noc to where the sleeve starts in the arrow NOT the broad head. It should be 25-26" you have broadhead weights that are from 75-150. I think you should be shooting a group "B" arrow 1913 or 1916 shaft. IF your arrow is 25"-26".

http://www.eastonarchery.com/uploads...-sel-chart.pdf