Again the best advice I can give you (and I seem to be saying this a lot) is to log onto
www.easton.com and download their tuning guide. These are the people that make the arrows they know what they are talking about. As for the advice on the nocking point that is a no no. the nocking point is always what you should sort out first.It's effect on the rest of the bow tune can be dramatic and its all to do with the arrow nodes and their contact with with the button. It's all in the tuning guide , read it and seek clarification on any points you are not sure of before proceeding