Originally posted by Rob DiStefano: everybody's different. that's what makes the world go 'round.i fling carbons ranging from 35 to 75 pound spine outta my 'hawks and they all fly 'straight and true'. dittos for woodies 45 to 70 pound spine. other folks just can't do this. why? think about it. what's the UNcommon denominator? right - it's you. dif'rent strokes fer dif'rent folks. it's all good.having an arrow shelf/plate cut to centershot means tweakability room for arrow spines and the way you shoot. it's a good thing to think about if yer getting a custom bow built ... or a reason to take rasp, abrasive paper, and some clear coats to yer bow's riser shelf.