If you are right handed, arrows to the left usually means a shaft that is too stiff. Your setup sounds fine if you draw 28".
If you are truly getting good flight, you may not be getting your eye over your arrow. Do you cant the bow? If so, make sure you cant your head at the same angle. Are you shooting split or 3 under? Shooting split can exacerbate this problem. With 3 under, the arrow is closer to your eye, so it is easier to keep your eye over the arrow. That is not to say you need to switch from one to the other. Just be aware your form could be the problem.
Another problem could be cross-dominance. If you are right handed, but left eye dominant, your left eye can try to take over. It may appear you are not shooting where you are looking, but if your left eye is looking over the tip of the arrow at the target, your arrow will be going where it is pointed rather than where you think it should.
Bottom line, before you chase demons in your equipment, make sure it is not a form issue.
Hope this helps.
Russ