I agree with sr77. I know one time that I put it my own head that I had one shot out of 4 that would go left and it did. It was self fullfilling prophecy.

Another thing to do is to number your arrows. You really might have a bad shaft. Last year I had an arrow that just was a wild flyer.I chuncked it and had a good year. It might have been in my head too, but it sure was easy to fix and a lot cheaper than a new release aid.