My carbon furies are great!!! With mineI have to deliberately aim(when at less than15 yards)at different targets so I don't Robin Hood them. Maybe it's the plastic vanes catching on your rest, I know you shoot a traditional, does it have a shelf, or is it off your knuckles?
Oh also did you buy them by the dozen? Ifyou didntthey're probably just fiberglass passing as carbon, those are ****. I once shot them and had 8-inch groups at 10 yards. That's horrible!!!!