I appreciate the advice. But what is the best way to make sure I have perfect centershot before doing this test? And why would a weak spine hit to the left with a compound and a release?? If I start shooting to adjust the length / spine of the arrow, how long past the rest should I start? If the arrow keeps hitting with a downward angle no matter what kind of adjustment, what is this showing....... too heavy tip, too forward foc.......... or is this an indication of improper spine?