It sounds to me like your overspined! When your arrows too stiff it pushes down on the launcher arms at release then kicks back up causing high tears.

Why hasn't Arthur jumped all over this one? Your aluminums are shooting great? I know what I'd do.

Then again if your grouping just fine and dandy , back up to 10 yds and see if you get a bullet hole. If you are , throw the damn paper in the trash and shoot away!