Hey TECbownut, I am talking about forgivness. The 500 shot good but after 15 years of shooting, I can feel the difference if you know what I mean. I am tring to get the set up more forgiving. I know I have to make a change and can opt for the 400s or cut the 500 to give me a little stiffer spine.I don't have a place that will let me test arrows so if I try 400s, they are mine when I buy them. I was looking for some input on cutting the 500s to 25 1/2 " or going to a 26 1/2" 400s. I have heard that when you try to shoot very short arrows, you have some other issues. Don