Yes the flyer is always straight up. I' m pretty sure its rest related. I' ll take 10 minutes to shoot a 5 arrow end, relax after each, take my time, concentrate, you name it, then bink....up one goes. I' ve been shooting off the wall and thought perhaps the flyers were valley shots (creeping). I' m positive now all shots had the same form and shot off the wall. I marked both cams on both sides of the limbs and can see no rotation. I measured the specs before I marked the cams and they were exact. I mean on the nuts exact.