I just watched the video, and do agree with the above mentioned make every shot count like your life depends on it, and slow down a bit, it is also rare that a self bow will reguire an arrow 10#'s over spine, you mentioned it had a cut shelf , but how far in, I think you need a weaker shaft or heavier tip, or a longer shaft which ever you like, I believe you are getting a false reading, hope this helps, Jbuck