Might want to post this in the technical forum with more info on your bow and setup. I think that you will have better luck with answers there. Make sure to post stuff like type of bow, draw weight, arrow length. Sounds like it could be a spine issue or contact issue with the different style vains.
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PSE Firestorm Lite
60# Maxed Out
29" draw
Peep Sight (Tube Type)
String loop, Leaches
Carbon Express Maxima 250's with 100 gr. tip
Total arrow weight 374gr. @ 250FPS 52 ft-lbs. Ke
Doinker D2 4" Stabilizer
Release
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