BowTech dosen' t recomend backing the limbs off, Mathews does. There is less stress on a parallel limb designed bow' s limbs than on a more verticle limb bow. Look at a diving board, the stress is spread over a longer working area. the more verticle the limbs are on a bow, the more the limb tip is being " pushed" directly toward the limb pocket. There is probably a math ratio that can be worked up that shows the ratio of the riser' s reflex compaired to the limb angle. Say a bow with 7.5 inches of brace with a 44 degree limb angle, 2.5 inches of reflex and 11 inches between the limb pocket and string would be just as forgiving as another bow with a 6.5 inch brace, 28 degree limb angle, 1.5 inches of reflex and 8.5 inches between the limb pocket and string.