Just tried it again and turned my nocks a little on the feathered arrows as it looks like they may have been contacting and they are now shooting closer than before. I will have to try more later as I ran out of daylight.

It also looks as if the string going to my cable from the drop away may be the culprit. After a shot the string is arched upward and it looks as though it could by contacting the fletch.

How do I find out if this is it?