needabow

Try walkback tuning. Search the form for a better explanation, but it goes something like so:

1) Setup your nocking point 1/8 - 1/4" high
2) Setup your rest by eyeball - try to get the arrow square on the string

Now, head to the range, and at 10 yards shoot 3 arrows. Move the sight as necessary. Repeat until you get a nice group. Move back to 20 and shoot 3 more, then 30 yards (ALL using the same PIN).

If your arrows trail off to one side, move the rest in the opposite direction in SMALL INCREMENTS.

Now, if you had to adjust your rest, go BACK to 10 yards, and repeat your sight-in by moving your sights only.

Repeat the 20 and 30 yard test as before. If needed, move the rest to fine-tune and repeat.

By now, you should have repeatable groups that are in a straight line down the target as you move back. You can now try moving back to 40-60 yards and repeating the test, making any fine adjustments to the rest as needed. Now you should have great arrow flight and the rest is up to your form and ability to hold steady. A moderate weight (8-12oz) stabilizer 6-10" long may greatly help with this. If you are still unable to hold steady and shoot groups at 30-40 yards, have a pro shop check your draw length and form (you actually should have done this from the start) to rule out any problems there.