I did what you are about to do based on advice from the prior owner of Sipsey River (THANKS!) However, I failed to calculate the desired arrow weight first. I want to shoot 9 - 10 grains per pound and it seems the easiest way to add weight is with point or insert weight. I now have well tuned arrows that fly very well, but are only 8.8 gr/lb. If I had it to do all over again, I would first calculate the final arrow weight needed for 10 gr/lb, then adjust the shaft choice, arrow length and tip weight to achieve something close to that weight.