I think I would try a 7595 before a 3555. Carbon arrows seem to act a little better if spined stiffer than if lighter. I can actually bare shaft a .300 spined arrow (GT 22 Pro Series) all the way down at 52 lbs and 27". Presently they are bare shafting well at 56 lbs where my bow maxes out. If you look at any chart you'll see that this is severly overspined, but hey, they work.