Have you taken advantage of their calculators. Their FOC calculator is very good at helping build your arrows. It may just be that your tip is to heavy. I also just bought some 7595, but havent tried them yet. I was having some tuning problems with the 5575 but since taking gold tips calculations the problem is gone. I havn't checked yet but I wonder if anyone has come out with an archers calculator. Seems they have one for every other form of math.