Ah Yes, another "Whip"-er!
Are you seeing porpoising or does the arrow just appear to be flying tail-high? First, I would suggest having someone stand behind you and to the side a bit and watch the arrow when you shoot. This will give another perspective and eliminate the chance that you might be peeking a bit because you think that the arrow isn't flying right, and peeking would throw off your form. Second, as mentioned about, I would paper tune AND bareshaft test. Or you could try putting on a broadhead and compare broadheads to field points. The broadhead would exaggerate any flight issues that you might be having. Best of Luck,
TomBow