WW: If a 62-inch string gives you a 9-inch brace height, a 64-inch string will be too long. You'll probably need something in the short 63-inch range. Is your string endless loop or flemish? Regardless, it should stretch some if you leave the bow strung for a day or two. Shooting it will also stretch the string some. Also, depending on how tightly it's twisted now, you may be able to untwist it some, maybe a lot, to lower the brace height.