Hey guys, I have a newb qeustion. How do you determine arrow spine for your particular bow. I have a hoyt razortech that I amshooting maxed out at 60lbs. I want to buy some new arrows but don't know what size to get. Right now I am shooting Beman 400's H.I.T. so they are really small. Will those work or do I actually need new arrows? Thanks

Curtis