RE: Spine Dumb, I am
I just ran you through 'The Archery Program' and show this arrow off the chart weak! I reccon this is your problem. I tried lowering your draw weight to 55 pounds and 65 grain tips and it only helps get your arrow to red/yellow weak.
Perhaps a better selection for arrow would be the 300 with 75 grain tips.
Happy Shooting!
Get with the Program!
>>>------Tony Virnoche------>>>
>>>---The Archery Program--->>>