I was out shooting today and I got back to some longer distances. My arrows enter the target as if they were shot from a point maybe 20' to the left of where I was actually standing - at 40 yards. I was getting a little of this at 20 yards but it is a lot worse at distance. The Eastman chart shows the arrow I'm using to be spined for a bow about 10 lbs. heavier than this one. Is that the problem? Or do I just need to move my arrow rest to the right (RH shooter)? Thx.