I string 2/3 badminton rackets. For me is 0,6 kg more on crosses the standard, not 10 %. Sometimes (and especially for my own rackets) i use 0,8 kg (~2 lbs) more. And as @Andl said, it depends on the 22x22 string pattern. I've noticed, if i strung mains=crosses, that the racket gets rounder and...