I think if I were you,I would try some more diffrent fletching. Feathers with helical,and even blazers,or feathers with a slight offset. Also you may be shooting too heavy of arrow.It would be cheaper on you to get new fletching for your current arrows as opposed to getting new arrows. I shoot at 67 lbs pull at 28 inch draw and I use the 400s. I bet you can get your arrows to work, with diffrent fletching.