I've been shooting Carbon Express Heritage 150s out of all my trad bows. I'm currently shooting a GN Ghost Recurve that I draw 46@27, and a Robertson Vision Quest that I draw 52@27. Both arrow shelves are cut just off center. My arrows are 31" and I am shooting 200 grain points with 50 grain brass inserts for a total arrow weight of 600 grains. This arrow set up is tuned for both bows. I am wanting to try some lighter arrows, and want to stick with carbons. What are my options in staying spined properly in a 450-500 grain completed arrow? I can give up 2" in arrow length with no big problems.