How's it going, I'm having a little trouble tuning my bow. Thinking the arrows are to soft spined, not to sure. Currently, shooting a black widow psa, draw around 27 inches, at around 55 pounds. Currently running gold tip pro hunters, 400 spine, full length, around 32 inches. 175 grain heads, with 3 rivers archery inserts, the heavier ones, total weight is around 720 grains. Started with the lighter inserts, with a total weight around 640 grains, figured it was to light and bumped the weight. So my problem seems to be grouping. The arrows seem to whip and wobble quit a bit off release, are my arrows to long, or my spine to soft? I'm having a hard time keeping my group tight at 20 yards, and I'm pretty sure it's not me. Thanks for any help